What do you mean by Tribology? Explain its significance in our daily life 2. Explain the role played by friction and wear in a tribological system 3. How do you define Wear? How it affects the properties of a surface?
Answers
(2.)Tribology is particularly important in today's world because so much energy is lost to friction in mechanical components. To use less energy, we need to minimize the amount that is wasted. Significant energy is lost due to friction in sliding interfaces.
(3.) Wear can be defined as an extremely short sliding motion and is executed within a short time interval.
(Idk how it effects the properties of surface sorry )
Related Questions
how did clair patterson determine the age of earth
Answers
Answer:
Patterson isolated lead from fragments of a meteorite that had struck Earth thousands of years ago, and determined the age of the fragments by analyzing proportions of the lead isotopes. The meteorite is assumed to have been formed at the same time as the rest of the solar system, including Earth
Explanation:
list 2 application of convertional current
Answers
Answer:
direct current (DC) and alternating current (AC)
I'm not weather the answer is right or wrong....
A 3 kg purple ball moving at 2 m/s to the right collides with a 2 kg white ball at rest. After the collision the purple ball comes to rest (0 m/s). What is the velocity of the white ball after the collision?
Answers
Answer:
1.2m/s
Explanation:
Using the law of conservation of energy
m1u1+m2u2 = (m1+m2)v
v is the common velocity after collision
Substitute the given values
3(2) + 2(0) = (3+2)v
6 + 0 = 5v
v = 6/5
v = 1.2m/s
Hence the velocity of the white ball after the collision is 1.2m/s
what is potential displacement?
Answers
Answer:
The answer to this question is given below in this explanation section.
Explanation:
"potential displacement"
in geometry and mechanics a displacement is a vector whose length is a shortest distance from the initial to the final position of a point p undergoing motion.it quantifies both the distance and direction of the net or total motion along a straight line from the initial position to the final position of the point trajectory.A displacement may be identified with the translation that maps the initial position to the final position.
A displacement ,may also described as a relative position that is as the final position xf of the point to the point relatively to its initial position xi.The corresponding displacement vectors can be defined as the difference between the final and initial positions.
s=xf-xi=Δx
in considering motion of objects over time,the instantaneous velocity of the object is the rate of change of the displacement as a function of time.The instantaneous speed then is distinct from velocity or the time rate of change of the position vector.if one considers a moving initial position or equivalently a moving origin.
From motion over a given interval of time,the displacement divided by the length of the time interval defines the average velocity which is a vector and differ thus from the average speed,which is a scalar.
Please I need help asap it due today!!!
In Racial Formations by Michael Omi and Howard Winant, race is defined as a socio historical concept, what does that mean
to the authors? Explain how race is
socially constructed or strictly biological. Support your response with two paragraphs.
Answers
The concept of race as a socio-historical construct highlights the importance of understanding the social, political, and economic contexts in which race is created and maintained.
What is race?According to Michael Omi and Howard Winant, in "Racial Formations," race is a socio-historical concept that is constructed through the intersection of cultural, political, and economic forces.
In this book, they argue that race is not an immutable, biologically determined characteristic of individuals or groups but rather a social construct that is created and maintained through systems of power and inequality.
The authors illustrate how race is constructed through examples from different historical periods and social contexts.
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1. what pressures and forces from the environment led stringer to change the balance between centralizing and decentralizing authority at sony?
Answers
An increasingly competitive environment, quick technological advancements, the need for a more collaborative organisational culture, and a focus on enhancing financial performance were some of the environmental pressures and forces that compelled Stringer to alter Sony's balance between centralising and decentralising authority.
The competitive environment, technological breakthroughs, organisational culture, and financial performance are the four primary categories that may be used to categorise the external pressures and causes that caused Stringer to alter the balance between centralising and decentralising authority at Sony.
1. Competitive Landscape: Sony's dominance in the industry was under threat from rivals like Apple, Samsung, and Microsoft as the worldwide market became more competitive. In order to maintain responsiveness and agility in the face of this fierce competition, Stringer had to reassess the balance of authority.
2. Technological Advancements: Sony has to innovate continually to be relevant in the era of rapid technological advancement and the digital revolution. Stringer had to decentralise control in order to encourage creativity, allowing staff members to assume more responsibility and participate in the creation of new goods and services.
3. Organizational Culture: Collaboration and synergies were hampered by Sony's conventional culture, which was characterised by siloed divisions and internal competitiveness. Stringer understood that centralising some decision-making processes would aid in dismantling organisational divisions, fostering collaboration, and creating a more cohesive workplace.
4. Financial Performance: Sony's management structure needed to be significantly changed as a result of its poor financial performance and shrinking market position. By balancing centralised control to maintain strategy coherence and decentralising authority to empower people, boosting efficiency and innovation, Stringer hoped to improve financial performance.
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Ok soo idk what question to ask but one of my friends said tht she was dressing as Harley Quinn and she said i should dress as her too but then i said no i dont rlly dress up of those kind of people but then she started to flip out because i couldnt dress as her?? Should I tell her that not all people can dress the same even if they want to or not? What should I say so she can stop saying things that are rude just bc she is mad and thats not my fault??
Answers
Answer:
You should tell her in a nice way that that's just not your style and if she doesnt accept that then maybe you should just not talk to her for a while and let her cool down
Explanation:
Hope this helps
Suppose 72% of students in the U. S. Would give their teachers a positive rating if asked to score their
effectiveness. A survey is conducted in which 500 students are randomly selected and asked to rate their
teachers. Let X = the number of students in the sample who would give their teachers a positive rating.
A. Show that X is approximately a binomial random variable.
B: Students either give a positive or negative rating
I: Since there are more than 10(500) students in the population, we can assume independence
N: 500 students were selected
S: P(positive rating) = 0. 72 for each student.
B. Use a Normal approximation to find the probability that 400 or more students would give their teacher
a positive rating in this sample
Answers
A. X is approximately a binomial random variable because it is the number of successful trials (students giving a positive rating) out of a fixed number of trials (500 students selected) and the trials are independent.
B. To use a Normal approximation, we can use the Central Limit Theorem which states that the sum of a large number of independent and identically distributed random variables will tend to have a normal distribution. So, we can approximate X ~ N(np, npq), where n = 500, p = 0.72, and q = 1 - p = 0.28.
Then, we can find the probability that 400 or more students would give their teacher a positive rating by using the cumulative distribution function (CDF) of a Normal distribution.
P(X >= 400) = P(Z >= (400-np)/sqrt(npq))
where Z is a standard normal variable
We can use a standard normal table or calculator to find P(Z >= (400-np)/sqrt(npq))
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Determine the absolute pressure exerted on a diver at 20 m below
the free surface of the sea. Assume a barometric pressure of
101.325 kPa and a specific gravity of 1.03 for seawater.
Answers
The Absolute Pressure exerted on the diver at 20 m below the free surface of the sea is approximately equal to = 323.252 kPa.
To determine the absolute pressure exerted on a diver at a certain depth below the free surface of the sea, we need to consider both the atmospheric pressure (barometric pressure) and the pressure due to the column of water above the diver.
The formula to calculate the absolute pressure in a fluid is:
Absolute Pressure = Atmospheric Pressure + Pressure due to depth
Given:
Barometric pressure = 101.325 kPa
Specific gravity of seawater = 1.03
Depth of the diver = 20 m
First, we need to calculate the pressure due to depth using the formula:
Pressure due to depth = Density of fluid * Gravitational acceleration * Depth
The density of seawater can be calculated using the specific gravity:
Density of seawater = Specific gravity * Density of water
The density of water is approximately 1000 kg/m³.
Now, let's plug in the values and calculate the pressure due to depth:
Density of seawater = 1.03 * 1000 kg/m³
Pressure due to depth = Density of seawater * Gravitational acceleration * Depth
Next, we can calculate the absolute pressure by adding the barometric pressure to the pressure due to depth:
Absolute Pressure = Barometric Pressure + Pressure due to depth
Let's perform the calculations:
Density of seawater = 1.03 * 1000 kg/m³
Pressure due to depth = (Density of seawater) * (Gravitational acceleration) * (Depth)
Absolute Pressure = Barometric Pressure + Pressure due to depth
Substituting the given values:
Density of seawater = 1.03 * 1000 kg/m³
Pressure due to depth = (1.03 * 1000 kg/m³) * (9.8 m/s²) * (20 m)
Absolute Pressure = 101.325 kPa + Pressure due to depth
Calculate the Pressure due to depth:
Pressure due to depth = (1.03 * 1000 kg/m³) * (9.8 m/s²) * (20 m)
Absolute Pressure = 101.325 kPa + Pressure due to depth
Now, let's calculate the values:
Pressure due to depth = (1.03 * 1000 kg/m³) * (9.8 m/s²) * (20 m)
Absolute Pressure = 101.325 kPa + Pressure due to depth
After performing the calculations, the Absolute Pressure exerted on the diver at 20 m below the free surface of the sea is approximately equal to:
Absolute Pressure ≈ 323.252 kPa
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A shorter moment arm (a muscle's tendon inserts closer to joint center) results in a ______________ torque force and ____________________ movement speed compared to that of a longer moment arm.
Answers
A shorter moment arm (a muscle's tendon inserts closer to joint center) results in a decreased torque force and increased movement speed compared to that of a longer moment arm.
The moment arm refers to the perpendicular distance between the line of action of a force and the axis of rotation. In the context of muscles, the moment arm is the distance between the joint center and the point where the muscle's tendon inserts. When the moment arm is shorter, the lever arm is reduced, resulting in a smaller torque force. Torque is the rotational force generated by the muscle to produce movement around a joint. With a shorter moment arm, the muscle has a smaller lever arm to exert force, leading to a decrease in torque force.
On the other hand, a shorter moment arm allows the muscle to exert force closer to the axis of rotation, resulting in a faster movement speed. This is because the distance traveled by the muscle during contraction is reduced, leading to a quicker motion.In summary, a shorter moment arm leads to a decreased torque force and increased movement speed compared to that of a longer moment arm.
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When you use your senses to gather information you are
Answers
An observation is information we gather about something by using the senses.
Planet
P
Note: Figure not drawn to scale.
In the figure above, a spaceship (not shown) from point P is traveling along the dashed
line towards the planet. The net gravitational force at point P is 4.0 x 1010 N. Assume that
any motion of the planet is negligible.
If the spaceship stops halfway between the planet and point P, what happens to the magnitude of the net gravitational force exerted on the spaceship by the planet?
o The net gravitational force stays constant.
o The net gravitational force is half as great.
o The net gravitational force is twice as great.
The net gravitational force is four times as great
Answers
If the spaceship stops halfway between the planet and point P, the net gravitational force is four times as great.
Gravitational force between two objects
The gravitational force between two objects is determined from Newton's second law of universal gravitation.
F = GmM/R²
where;
R is the distance between the spaceship and the planet.when the distance halved
F = GmM/(0.5R)²
F = GmM/(0.25R²)
F = 100GmM(25R²)
F = 4GmM/R²
Fnet = 4F
Thus, if the spaceship stops halfway between the planet and point P, the net gravitational force is four times as great.
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What celestial body is the center of our solar system, around which every object orbits?.
Answers
Explanation:
The Sun is the center of the solar system. What is the Sun? Earth's Sun may seem different to us, but it is a star like all the other stars located outside the solar system.
the four large moons of jupiter were first discovered by: a. ancient people, seeing jupiter in dark, cloudless skies b. galileo with his early telescope c. isaac newton with his improved telescope d. william herschel, in the 18th century e. the voyager spacecraft
Answers
The four large moons of jupiter were first discovered by Galileo with his early telescope. Hence option b is correct.
Using a homemade telescope, Italian astronomer Galileo Galilei found four moons orbiting Jupiter on January 7, 1610. Looking at what he believed to be a cluster of stars, he saw that the objects seemed to move in a predictable manner.
Some of the most intriguing geology in the solar system can be found on Jupiter's four biggest moons. The Galilean moons are so named because Galileo Galilei was the one who discovered them. While the other three are bigger than Pluto, Ganymede, Jupiter's largest moon, is bigger than Mercury. Io, Europa, Ganymede, and Callisto are the four biggest moons of Jupiter.
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A 1234 kg freight car moving at 6 m/s runs into a 2468 kg freight car at rest. They stick together upon collision. What was the final combined speed?
Answers
Answer:
2 m/s
Explanation:
Applying,
The law of conservation of momentum
Total momentum before collision = Total momentum after collision
mu+m'u' = V(m+m')............... Equation 1
Where m = mass of the first freight car, m' = mass of the second freight car, u = initial velocity of the first freight car, u' = initial velocity of the second freight car, V = final combined velocity/ speed.
make V the subject of the equation
V = (mu+m'u')/(m+m')........... Equation 2
From the question,
Given: m = 1234 kg, m' = 2468 kg, u = 6 m/s, u' = 0 m/s (at rest)
Substitute these values into equation 2
V = [(1234×6)+(2468×0)]/(1234+2468)
V = 7404/3702
V = 2 m/s
A runner starts a race at rest and reaches her top speed of 8.6m/s in 19.0s. What is the average acceleration?
Answers
Answer:
Average acceleration = 0.45 m/s²
Explanation:
Given the following data;
Initial velocity, u = 0m/s
Final velocity, v = 8.6 m/s
Time, t= 19 seconds
To find the average acceleration;
In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.
This simply means that, acceleration is given by the subtraction of final speed from the initial speed all over time.
Mathematically, acceleration is given by the formula;
\(Acceleration = \frac{initial speed - final speed}{time}\)
Substituting into the formula, we have;
Acceleration = (8.6 - 0)/19
Acceleration = 8.6/19
Average acceleration = 0.45 m/s²
A star has a parallax angle of 0.1 arcsecond. How far away is it?
1,000 astronomical units
32.6 light years
300 million km
0.1 parsecs
Answers
A star with a parallax angle of 0.1 arcsecond is approximately 32.6 light years away.
The parallax angle is a measurement used to determine the distance to a star. A parallax angle of 0.1 arcsecond corresponds to a distance of approximately 32.6 light years. This means that the star is located at a distance from Earth that takes light 32.6 years to travel.
The other options provided, 1,000 astronomical units, 300 million km, and 0.1 parsecs, do not align with the given parallax angle and are not the correct distance estimations for a star with a parallax angle of 0.1 arcsecond.
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a body of mass 5kg moving on a horizontal ground has a coefficient of friction 0.36.find the normal reaction acting on the body?
Answers
Answer:
50 N.
Explanation:
From the question given above, the following data were obtained:
Mass (m) = 5 Kg
Coefficient of friction (μ) = 0.36
Normal reaction (N) =?
Next, we shall determine the weight of the body. This can be obtained as follow:
Mass (m) = 5 Kg
Acceleration due to gravity (g) = 10 m/s²
Weight (W) =?
W = mg
W = 5 × 10
W = 50 N
Finally, we shall determine the normal reaction. This can be obtained as follow:
Weight (W) = 50 N
Normal reaction (N) =?
Normal reaction = weight of the body
N = W = 50 N
Thus, the normal reaction acting on the body is 50 N
what is the role of convection in producing the rain shadow effect?
Answers
Convection plays a crucial role in producing the rain shadow effect because it is the mechanism that causes the air to rise and cool on the windward side of the mountain range.
What is Convection?
Convection is the process by which heat is transferred from one place to another by the movement of fluids (liquids or gases). In this process, warmer portions of the fluid rise while cooler portions sink, creating a cyclical flow.The process of convection occurs because heated fluid becomes less dense and rises, while cooler fluid is denser and sinks. This movement of the fluid creates a current that can transfer heat from one place to another.Convection plays an important role in many natural processes, such as weather patterns, ocean currents, and the Earth's mantle convection. Convection is also commonly used in engineering and technology to transfer heat in devices such as air conditioners, refrigerators, and heat exchangers.The rain shadow effect is a phenomenon that occurs when moist air from an ocean or other body of water encounters a mountain range, causing the air to rise and cool, leading to precipitation on the windward side of the mountain range. However, as the air descends down the leeward side of the mountain range, it warms and dries out, creating a rain shadow region with much less precipitation.
Convection plays a crucial role in producing the rain shadow effect because it is the mechanism that causes the air to rise and cool on the windward side of the mountain range. When the moist air encounters the mountain range, it is forced to rise due to the topography, leading to the formation of clouds and precipitation. This rising air is driven by convective processes, which occur as a result of temperature differences within the atmosphere.
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You will drop the bottle/water mass so that it hits the lever at different speeds. Since an object in free fall is accelerated by gravity, you need to determine the heights necessary to drop the bottle to achieve the speeds of 2 m/s, 3 m/s, 4 m/s, 5 m/s, and 6 m/s. Use the equation Ht = v squared over 2 g. to calculate the height, where Ht is the height, v is the speed (velocity), and g is the gravitational acceleration of 9.8 m/s2.
Record these heights in Table B.
Answers
You must figure out from what height to lower the bottle in order to reach the speed of 2 m/s, 2.5 m, 30 cm, 500 mm, or 6 m/s since gravity accelerates an object on free fall.
Does gravity accelerate free fall?The acceleration is continuous and 9.8m each square second at sea level on Earth, which is the gravitational acceleration of g. The object's weight, size, or shape has no bearing on how a free fall is described. The beach ball falls at the same velocity as an eroplane in a vacuum.
Who made the discovery of the gravity speed?Isaac Newton believed that gravity had an instantaneous effect, but Einstein based his 1915 general relativity theory on the premise that gravity actually travels just at speed of light.
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Combine your equations from part b to give a relationship between the initial and final values of the current ( i0 and i ) and the initial and final temperatures ( t0 and t ).
Answers
Initial temperature (I.T.) is described in 21 CFR 113.3(l) as the average temperature of the contents of the coldest container to be processed at the start of the thermal processing cycle, as determined following thorough stirring or shaking of the filled and sealed container.
To calculate the final heat of your substance, add the temperature change to the starting point. If your water started off at 24 degrees Celsius, for instance, the end temperature would be 24 + 6, or 30 degrees Celsius. Where the velocity is unknown, one uses the equation: KE=12mv2 K E = 1 2 m v 2 to calculate the initial kinetic energy. The final Potential Energy is calculated using the formula: PE=mgh P E = m g h, where h is the height of 50 meters.
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How fast isn’t a ball going when it hits the ground after being dropped from a height of 9 m? the acceleration of gravity is 9.8 m/s2
Answers
Answer:13,3 m/s
Explanation:We can use the Torricelli equation:
v^2=v0^2+2ah
the initial velocity is 0
v0^2=0
so:
v^2=0+2*9,8*9
v^2=176,4
v=13,3 (approx)
Answer:
For me i think the answer will be 13.72m/s
Which of the following BEST explains how good body composition is attained?
A.
taking in a greater amount of energy than is released by the body
B.
taking in a lesser amount of energy than is released by the body
C.
balancing the amount of energy that is taken in with the amount of energy that is released by the body
D.
none of the above
Answers
Answer:
C. balancing the amount of energy that is taken in with the amount of energy that is released by the body
Explanation:
Edge 2021
a trough is filled with a liquid of density 830 kg/m3. the ends of the trough are equilateral triangles with sides 8 m long and vertex at the bottom. find the hydrostatic force on one end of the trough. (use 9.8 m/s2 for the acceleration due to gravity.)
Answers
So, the hydrostatic force on one end of the trough is approximately 886,159.25 Newtons.
The hydrostatic force on one end of the trough can be found using the equation:
Force = Pressure x Area
First, let's find the pressure exerted by the liquid on the end of the trough.
The pressure at any point in a liquid is given by the equation:
Pressure = density x gravity x height
Here, the density of the liquid is given as 830 kg/m³, and the acceleration due to gravity is 9.8 m/s². We need to find the height of the liquid above the end of the trough.
Since the ends of the trough are equilateral triangles, each side is 8 m long.
The height of an equilateral triangle can be found using the formula:
Height = (√(3) / 2) x side
Substituting the side length of 8 m into the formula, we get:
Height = (√(3) / 2) x 8
= 4√(3) m
Now we can calculate the pressure:
Pressure = 830 kg/m³ x 9.8 m/s² x 4√(3) m
≈ 33,867.35 Pa (Pascals)
Next, we need to find the area of one end of the trough.
Since the end is in the shape of an equilateral triangle, we can use the formula for the area of an equilateral triangle:
Area = (√(3) / 4) x side²
Substituting the side length of 8 m into the formula, we get:
Area = (√(3) / 4) x 8²
= 16√(3) m²
Now we can calculate the hydrostatic force:
Force = Pressure x Area
= 33,867.35 Pa x 16√(3) m²
≈ 886,159.25 N (Newtons)
So, the hydrostatic force on one end of the trough is approximately 886,159.25 Newtons.
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Convert 8 m/s to miles per hour
Answers
Answer:
17.8954903 or 17.9 mph
Explanation:
m/s is meters per second. 1609.344 meters is one mile. There are 3,600 seconds in an hour. 8 meters *3600 seconds= 28,800. 28,800/1609.344 = 17.8954903. Simplify to 17.9
A hiker walks with an average speed of 2.6 M Square what distance in kilometers does the hiker travel in a time of 2.8 hours
Answers
Answer:
The answer is "26.208 km"
Explanation:
Given value:
\(\to S= 2.6 \ \frac{m}{s}\\\\\to t= 2.8 \ hours\)
Formula:
\(d= st\\\\d= 2.6 \times 2.8 \times \frac{60 \times 60}{1000}\\\\d= 26.208\ km\)
Find the explicit difference equation for each recursive equation, and describe the graph of each equa tion (attracting/ repelling/ monotonic/ oscillating). If the graph is monotonic; is it increasing or decreasing? If the graph is attracting; what line is the difference equation attracting to (i.e. find the asymptote line)? Make sure to include all work for full credit. If your final answer is in decimals then round to the nearest 100th. (note: you do not need to graph the equation, only describe it)
a. yn+1 = −7yn + 14, y0 = 2
b. yn+1 = 0.1yn + 0.75, y0 = 0
c. yn+1 = 55yn − 11, y0 = −3
Answers
Given Recursive equations are: a. yn+1 = −7yn + 14, y0 = 2, b. yn+1 = 0.1yn + 0.75, y0 = 0, c. yn+1 = 55yn − 11, y0 = −3Now we will find the explicit difference equation for each recursive equation and describe the graph of each equation.a. yn+1 = −7yn + 14, y0 = 2The explicit difference equation is obtained by solving the given equation for yn:yn+1 = −7yn + 14 = (-7)yn + 14This is a first-order linear homogeneous difference equation.
Its characteristic equation is z - (-7) = 0 or z + 7 = 0The characteristic equation has a root of z = -7Therefore, the explicit difference equation is: yn = c (-7)n + dwhere c and d are constants that depend on the initial conditions. We know that y0 = 2, so: yn = 2 (-7)n + dThe graph of this equation is attracting because the absolute value of the root is greater than 1. Therefore, the solution approaches 0 as n increases indefinitely.
The equation has a horizontal asymptote at y = 0.b. yn+1 = 0.1yn + 0.75, y0 = 0The explicit difference equation is obtained by solving the given equation for yn:yn+1 = 0.1yn + 0.75This is a first-order linear nonhomogeneous difference equation. Its homogeneous equation is yn+1 = 0.1ynThis equation has a characteristic equation of z - 0.1 = 0 or z = 0.1Since the root of the characteristic equation is less than 1, the homogeneous equation is converging to zero as n increases indefinitely.
Therefore, the particular solution to the nonhomogeneous equation will also approach 0. The particular solution can be obtained by setting yn+1 = c (constant). Then:yn+1 = 0.1yn + 0.75 = c0.1yn = c - 0.75yn = (c/-0.9) + (5/6)Therefore, the explicit difference equation is:yn = c (0.1)n + (5/6)where c is a constant that depends on the initial conditions. We know that y0 = 0, so:yn = 0.1c0 + (5/6)The graph of this equation is monotonic and increasing because the root of the characteristic equation is positive.c. yn+1 = 55yn − 11, y0 = −3The explicit difference equation is obtained by solving the given equation for yn:yn+1 = 55yn − 11
This is a first-order linear homogeneous difference equation. Its characteristic equation is:z - 55 = 0The characteristic equation has a root of z = 55Therefore, the explicit difference equation is:yn = c (55)nwhere c is a constant that depends on the initial conditions. We know that y0 = -3, so:yn = c (55)n - 3The graph of this equation is repelling because the absolute value of the root is greater than 1. Therefore, the solution diverges as n increases indefinitely.
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Can you think of a way to explain Hubble's Law other than the
standard Big Bang idea, which includes the concept of a Universe
with no center and no edge?
Answers
An alternative way to explain Hubble's Law without relying on the standard Big Bang idea of a universe with no center and no edge is through the concept of a "tired light" hypothesis.
According to this hypothesis, the redshift observed in distant galaxies is not due to their motion away from us in an expanding universe, but rather the result of photons gradually losing energy as they travel through space.
In the tired light scenario, the wavelength of light is thought to stretch over time due to interactions with matter or other unknown processes. As a result, the light from distant galaxies appears redshifted, mimicking the effect of cosmic expansion. This explanation implies that the universe may have a finite size and a center, challenging the notion of an infinite and uniformly expanding universe.
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research paper on tsunamis (4-5 paragraphs minimum) 3) Tsunamis how they work….evacuation routes, structures built in oceans to protect, early detection, etc
Expectations:
A. Must be at least 4 full paragraphs. (probably will need to be more)
B. Must have an introductory paragraph that explains what the problem is, and the general overview of the paper.
C. Must Define Problem, including details and how it relates to Irvine
D. Main Body of Paper (probably couple of paragraphs) This is where you will show what you found out in your research. Make sure to include things like current use/techniques, as well as what technological advancements are being researched to improve your specific topic/issue.
E. Conclusion: Short summary of main points. Your Opinion on what is working and why (or what is not working and why)
F. Citations: Must use at LEAST 3 sources. Must site works at end, in either MLA or APA format, AND must site them where used in the paper (also MLA or APA format).
Make sure all work is yours and original. Copying is cheating. Using information from a source without citing is plagiarism.
Answers
Tripling the mass of the bob on a simple pendulum will cause a change in the frequency of the pendulum swing by what factor? A. 0.33 B. 1.0 C. 3.0 D. 9.0 E. 12
Answers
The frequency of the pendulum swing will decrease by a factor of 1.5.
The frequency of a simple pendulum is given by the formula f=1/(2*pi)*sqrt(g/l), where g is the acceleration due to gravity and l is the length of the pendulum.
Mass does not directly affect the frequency of a simple pendulum. However, if the mass of the bob is tripled, the force due to gravity acting on the bob will also triple, causing the tension in the string to increase by a factor of three.This will cause the pendulum to swing more slowly, but the effect on the frequency will not be as pronounced.
Since the frequency of a simple pendulum is only dependent on the length of the pendulum and the acceleration due to gravity, tripling the mass of the bob will cause the frequency to decrease by a factor of sqrt(3), or approximately 1.5.
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