can a vector have a component equal to zero and still have nonzero magnitude? match the words in the left column to the appropriate blanks in the sentences on the right.
Answers
The statements stands true. A vector have a component which is equal to zero and still have nonzero magnitude.
In a 2-D plane a vector can be resolved into the rectangular components. These are rectangular components to each other. These are available at right angles to each other. One component is directed along x-axis. It is the termed as horizontal component. The other one is directed along y-axis. Is termed as vertical component.
Sometimes, the vector is directed entirely either along x-axis or y-axis. When the vector is along x-axis or parallel to x-axis, then the complete magnitude will be directed along horizontal component. The vertical component will be zero. For a vector which is along y-axis, the horizontal component will be zero. The entire magnitude will be along y-axis.
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Related Questions
which would have the greater the effect on the momentum, changing the mass or changing the velocity?
Answers
It is simple to see how momentum relates to an organism's mass and speed. As a result, an object's momentum grows as its mass or speed increases.
Definition of momentum.The combination of a particle's velocity and mass produces momentum. Being a vector quantity, momentum possesses both direction and magnitude. According to Isaac Newton's second equation of motion, the force applied on a particle is equal to the temporal rate at which its momentum changes.
Why is momentum crucial?The link between an object's mass, speed, and direction is provided by momentum. Force is the outcome of any change in momentum. Therefore, the force acting on the object is determined using a change in momentum.
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Water is heated by hot air in a double-pipe heat exchanger L = 10 m, with water flowing in the inner tube (Di = 3 cm), and air flowing in the tube annulus (Do = 5.5 cm). The flow rate of the water is 1.2 kg/s and that of the air is 0.5 kg/s. The water enters at 40°C while the air enters at 280°C. If the air-side convection coefficient hair = 1000 W/m2·K, determine the following:
(a) The outlet temperatures of both the air and the water if the heat exchanger is operating in a parallel-flow arrangement.
(b) The outlet temperatures of both the air and the water if the heat exchanger is operating in a counter-flow arrangement.
Assume fully-developed flow conditions. Evaluate the fluid properties at the inlet temperatures.
Answers
(a) In a parallel-flow arrangement, the outlet temperature of the water and the air can be determined using the energy balance equation. The heat transfer rate between the water and the air is equal to the product of the water mass flow rate, specific heat capacity of water, and the change in temperature of the water:
Similarly, the heat transfer rate between the air and the water is equal to the product of the air mass flow rate, specific heat capacity of air, and the change in temperature of the air:
Since the heat exchanger is operating under fully-developed flow conditions, the outlet temperature of the water and the air can be found by equating the heat transfer rates:
By substituting the given values, including the specific heat capacities of water and air, and solving the equations, the outlet temperatures of the air and water can be calculated.
(b) In a counter-flow arrangement, the outlet temperatures of the air and water can be determined using a similar energy balance equation. However, in this case, the change in temperature of the air is taken as the difference between the outlet and inlet temperatures of the air:
Again, by equating the heat transfer rates, substituting the given values, and solving the equations, the outlet temperatures of the air and water in a counter-flow arrangement can be calculated.
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In its orbit, Earth circles the sun once every year. This movement around the sun is called a(n) ________.
Answers
Answer:
Is called a(n) revolution
Explanation:
in a two-slit interference pattern on a distant screen, are the bright fringes midway between the dark fringes? is this ever a good approximation?
Answers
Due to its dependence on L, the spacings between various fringes get smaller as the distance between the slits gets more. The space between various fringes grows as the light's wavelength rises because this is a wavelength-dependent property.
How far apart are the second bright fringes on either side of the main bright fringe?Distance between the core bright fringe and two side-by-side dark fringes is 2 mm (1. 2 inches).
How do you calculate the separation between the dark and brilliant fringes?As a result, "xn = (2n+1)D/2d" is how far the "n" brilliant fringe is from the "centre." Similar to the example above, the formula for the distance between the "n-1" dark fringe and the "centre" is: "x (n-1)= (2(n-1) +1)D/2d."
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what is the gravitational potential energy of a 1.02 kg book on the top of a 2.0m locker
Answers
Answer:
20.4
Explanation:
the velocity in centimeters per second of blood molecules flowing through a capillary radius
Answers
The velocity of blood flow in capillaries can vary depending on various factors, including blood pressure, viscosity, and the specific characteristics of the capillary bed.
The velocity of blood molecules flowing through a capillary can be explained by the principles of fluid dynamics. In a capillary, blood flow is characterized by laminar flow, which means that the blood flows in smooth, parallel layers.
The velocity of blood molecules can be affected by various factors, including the radius of the capillary. According to the principle of continuity, which states that the volume flow rate of an incompressible fluid remains constant along a tube, the velocity of blood molecules is inversely proportional to the cross-sectional area of the capillary.
As the radius of the capillary decreases, the cross-sectional area decreases as well. This leads to an increase in the velocity of blood molecules. This relationship can be explained by the equation of continuity:
A1V1 = A2V2
Where A1 and A2 are the cross-sectional areas at two different points along the capillary, and V1 and V2 are the corresponding velocities at those points.
Since the radius is inversely proportional to the cross-sectional area (A), we can rewrite the equation as:
r1^2 * V1 = r2^2 * V2
Where r1 and r2 are the radii at two different points along the capillary.
From this equation, we can observe that as the radius (r) decreases, the velocity (V) increases to maintain the constant flow rate. This means that blood molecules flow faster through narrower capillaries compared to wider ones.
To express the velocity in centimeters per second, it is important to consider the units of the radius. If the radius is given in centimeters, then the velocity will also be in centimeters per second. However, if the radius is given in another unit such as millimeters, the velocity would need to be converted accordingly.
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Which of the following best describes the circuit shown below?
A. Short
B. Series
C. Parallel
D. Open
Answers
Answer:
parallel combination of cell
I really need help.
Answers
yeah i did, hope you understand
A ray of light strikes a boundary between two transparent materials, and there is no transmitted ray, as shown in the figure. What can you conclude about the indices of refraction of these two materials
Answers
Answer:q
Explanation:
Which equation states Newton's second law?
Answers
Explanation:
Newton's second law, which states that the force F acting on a body is equal to the mass m of the body multiplied by the acceleration a of its centre of mass, F = ma, is the basic equation of motion in classical mechanics.
Answer:
F = ma (F = m × a)
Explanation:
Newton's second law of motion is F = ma, or force is equal to mass times acceleration.
20
All electromagnetic waves travel at the speed of light (300,000,000 m/s). However, even at this speed, if a radio
transmission is sent to astronauts on the Moon, there is a delay between the time that the message was sent
and the time that the astronauts receive it. Why?
0/1
Radio waves travel at a slower speed through a vacuum than they do through air.
The Moon is very far away from the Earth and it takes time for radio messages to travel.
Ο Ο Ο Ο
Asteroids and other space debris interfere with radio transmissions from Earth.
Radio waves are delayed as they pass through Earth's atmosphere.
Answers
Answer:
t = S / V = 3.8E8 / 3E8 = 1.3 sec
It takes over 1 second for a radio signal to travel between the earth and the moon.
a sound wave is modeled as . what is the maximum change in pressure, the wavelength, the frequency, and the speed of the sound wave?
Answers
Set sampling period Ts=1/1000 (sec), and time axis 0 ~ 5 (sec).
Generate signals: x1(t)=10cos(ω1t); x2(t)=6sin(ω2t); x3(t)=cos(ω3t)+ 10sin(ω3t);
where ω1=50 Hz; ω2=95 Hz; ω3=120 Hz;
plot x1(t) within the maximum amplitude and time of 0~0.5 second,
Let y1(t)= x1(t)+ x2(t)+ x3(t), plot y1(t) within the maximum amplitude and time of 0~0.5 second.
ndicate the labels in x-axis and y-axis
Answers
The x-axis should be labeled with the time values in seconds from 0 to 0.5, and the y-axis should be labeled with the values of x1(t) ranging from -10 to 10, considering the maximum amplitude of the signal.
To plot the signal x1(t) within the time range of 0 to 0.5 seconds, we need to determine the corresponding values of x1(t) for that time range.
Given that x1(t) = 10cos(ω1t) with ω1 = 50 Hz, we can calculate the values of x1(t) using the formula.
For the time range of 0 to 0.5 seconds:
- At t = 0 seconds, x1(t) = 10cos(ω1 * 0) = 10cos(0) = 10 * 1 = 10.
- At t = 0.5 seconds, x1(t) = 10cos(ω1 * 0.5) = 10cos(25π) ≈ -7.071.
Plotting these values on the y-axis against the corresponding time values on the x-axis will give us the graph of x1(t) within the time range of 0 to 0.5 seconds.
The x-axis should be labeled with the time values in seconds from 0 to 0.5, and the y-axis should be labeled with the values of x1(t) ranging from -10 to 10, considering the maximum amplitude of the signal.
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An object falls from the top of a building that is 25 m high. Air resistance is negligible.
What is the speed of the object when it hits the ground?
Answers
The velocity of the object s calculated as 22.1 m/s.
What is the speed of the object?Given that we can write that;
v^2 = u^2 + 2gh
Now u = 0 m/s because the object was dropped from a height
v^2 = 2gh
v = √2 * 9.8 * 25
v = 22.1 m/s
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Temperature is a measure of the average
________________
energy of particles in a substance.
kinetic
Temperature and kinetic energy have a
__________
relationship.
direct
Kelvin, Celsius, and Fahrenheit are three types of
______________
scales.
temperature
What are the units for measuring specific heat?
joules per gram degree Celsius
Which best compares kinetic energy and temperature?
Kinetic energy is energy of motion, while temperature is a measure of that energy in substances.
Answers
Temperature is a measure of the average kinetic energy energy of particles in a substance.
Temperature and kinetic energy have a directly proportional relationship.
Kelvin, Celsius, and Fahrenheit are three types of Temperature scales.
The average kinetic energy of the particles in a substance is measured by temperature. The overall kinetic energy of the particles in a substance is measured by its thermal energy. The temperature and thermal energy of a substance increase with particle mobility.
The average kinetic energy of a substance's particles is directly proportional to the substance's temperature.
The three temperature scales that are now in use are Kelvin, Celsius, and Fahrenheit.
Typically, calories or joules per gramme per degree Celsius are used as the units of specific heat. For instance, water has a specific heat of 1 calorie (or 4.186 joules) per gramme per degree Celsius.
Temperature is a measurement of that energy in substances, whereas kinetic energy is the energy of motion.
Temperature is a measurement of that energy in substances, whereas kinetic energy is the energy of motion. According to Zoe, a material has a temperature of 12 degrees Celsius. What does this indicate to Zoe regarding the substance? It has an average kinetic energy of 12 Celsius.
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Temperature is a measure of the average kinetic energy energy of particles in a substance.
Temperature and kinetic energy have a directly proportional relationship.
Kelvin, Celsius, and Fahrenheit are three types of Temperature scales.
The average kinetic energy of the particles in a substance is measured by temperature. The overall kinetic energy of the particles in a substance is measured by its thermal energy. The temperature and thermal energy of a substance increase with particle mobility.
The average kinetic energy of a substance's particles is directly proportional to the substance's temperature.
The three temperature scales that are now in use are Kelvin, Celsius, and Fahrenheit.
Typically, calories or joules per gramme per degree Celsius are used as the units of specific heat. For instance, water has a specific heat of 1 calorie (or 4.186 joules) per gramme per degree Celsius.
Temperature is a measurement of that energy in substances, whereas kinetic energy is the energy of motion.
Temperature is a measurement of that energy in substances, whereas kinetic energy is the energy of motion. According to Zoe, a material has a temperature of 12 degrees Celsius. What does this indicate to Zoe regarding the substance? It has an average kinetic energy of 12 Celsius.
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A ball with a momentum of 16 kg.M/s strikes a ball at rest. What is the total momentum of both the balls after the collision.
Answers
Answer:
Total momentum = 16 Kgm/s
Explanation:
Let the momentum of the two balls be A and B respectively.
Momentum A = 16 kgm/s
Momentum B = 0 kgm/s (since the ball is at rest).
Total momentum = A + B
Total momentum = 16 + 0
Total momentum = 16 Kgm/s
Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.
Mathematically, momentum is given by the formula;
\( Momentum = mass * velocity \)
Total momentum of both the balls after the collision is 16 Kg.m/s
Given:
Momentum= 16 kg.m/s
To find:
Total momentum of both the balls after the collision.
What is momentum?
Momentum can be defined as the product of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity since it has both magnitude and direction.It is given as: \(\text{P}=\text{m*v}\) where m= mass and v=velocity of an object.Consider the momentum of the two balls be A and B respectively.
Momentum A = 16 kg.m/s
Momentum B = 0 kg.m/s (since the ball is at rest).
Total momentum = A + B
⇒ 16 + 0
Total momentum= 16 kg.m/s
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We repeat the experiment from the video, but this time we connect the wires in parallel rather than in series. Which wire will now dissipate the most heat? View Available Hint(s) We repeat the experiment from the video, but this time we connect the wires in parallel rather than in series. Which wire will now dissipate the most heat? The copper wire (resistance 0.1 Ω ) Both wires will dissipate the same amount of heat. The Nichrome wire (resistance 2.7 Ω ) Submit Provide Feedback Next
Answers
Answer:
The copper wire (resistance 0.1 Ω )
Explanation:
In a parallel connection, the same voltage is maintained across all the resistors but the current varies.
The larger the magnitude of the resistance, the smaller the current flowing in the circuit and the smaller the heat dissipated by the resistor.
Hence the copper wire dissipates the greatest heat.
A 51 cm diameter wheel accelerates uniformly about its center from 150 rpm to 290 rpm in 4.0 s. (A)Determine the radial component of the linear acceleration of a point on the edge of the wheel 1.1 s after it has started accelerating.
Answers
Radial component of the linear acceleration = 99.47 m/s^2
Explanations:The diameter of the wheel, d = 51 cm
The radius, r = d/2 = 51/2 = 25.5 cm
r = 25.5/100 = 0.255 m
r = 0.255 m
\(\begin{gathered} N_{i\text{ }}=\text{ 150 rpm} \\ w_i=\text{ 150}\times\frac{2\pi}{60} \\ w_i=\text{ }15.71\text{ rad/s} \end{gathered}\)\(\begin{gathered} N_f=\text{ 290 rpm} \\ w_f=\text{ 290}\times\frac{2\pi}{60} \\ w_f=\text{ }30.37\text{ rad/s} \end{gathered}\)\(\begin{gathered} w_f=w_i+\alpha t \\ 30.37=15.71+4\alpha \\ 4\alpha=30.37-15.71 \\ 4\alpha=\text{ }14.66 \\ \alpha=\frac{14.66}{4} \\ \alpha\text{ = }3.67rad/s^2 \end{gathered}\)At t = 1.1, first calculate the new angular velocity
\(\begin{gathered} w=w_1+\alpha t \\ w\text{ = 15.71+3.67(1.1)} \\ w\text{ = 15.71+}4.04 \\ w\text{ = }19.75\text{ rad/s} \end{gathered}\)The radial component of the linear acceleration is given as:
\(\begin{gathered} a_r=w^2r \\ a_r=19.75^2\times0.255 \\ a_r=\text{ }99.47\text{ m/}s^2 \end{gathered}\)i'll give brainliest!!! please help asap!!!
Which of the following electromagnet will have the strongest force?
1: A battery with no loops or wire around the nail
2: A battery with 10 loops of wire around the nail
3: A battery with 3 loops of wire around the nail
4:A battery with 15 loops or wire around the nail
Answers
Answer:
4:A battery with 15 loops or wire around the nail
Explanation:
More loops equals more force
A battery with \(15\) loops or wire around the nail have the stronger force.
So, option 4 is correct.
Define electromagnet.An electromagnet is a system that contains of a magnetic encircled by a coil that conducts an electric current to ionize the core.
Wherever controllable magnetism are required, such as in devices where the magnetic flux must be adjusted, reversed, or turned on and off, an electromagnet is utilized.
A battery with \(15\) loops or wire around the nail have the stronger force.
So, option 4 is correct.
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A gas expands from I to F in the figure. The energy added to the gas by heat is 461 J when the gas goes from I to F along the diagonal path. What is the change in internal energy of the gas? Answer in units of J. How much energy must be added to the gas by heat for the indirect path IAF to give the same change in internal energy? Answer in units of J. (Diagram attached to question).
Answers
The internal energy of the gas can be obtained as 1373 J.
What is the internal energy of a gas?The total kinetic and potential energies of the individual molecules that make up a gas are referred to as the gas' internal energy.
In other words, it is the energy resulting from the gas particle's interactions and random motion.
We kn ow that the internal energy can be given by the formula;
U = q + w
U = internal energy
q = heat
w = work done
Thus;
w = pdV
w = 3 (4 -1)
w = 9atmL
Since
1 L atm = 101.325 J
9atm L = 912 J
Then;
U = 461 + 912
= 1373 J
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someon figure this out answer for me
Answers
Answer:
D. chemical control
Explanation:
The reason for using chemical control as last resort in IPM is:
1) Impact is very high
2) The response is immediate
3. In the wave models, you imagined adding energy into the wave by
moving your arm up and down or back and forth. These are called
mechanical waves. Explain how you know that energy traveled from you
to your friend. In your answer, identify the medium that the energy
traveled through.
Answers
Answer:
by moving your hands up and down your we're creating transverse wave which travel in a right angle shape towards your friend
Move your hand up and down to make a vertical transverse wave towards your friend.
What are mechanical waves?Mechanical waves are matter vibrations that are responsible for energy transmission through a medium.The transmission medium limits the distance of wave propagation. Mechanical waves are classified into three types. Particle motion is perpendicular to wave motion in the transverse direction.Longitudinal - Particle motion follows the same path as wave motion. Sea waves for bonding.Turbulence or vibration of matter, whether solid, gas, liquid, or plasma, causes mechanical waves. A medium is a substance that allows waves to travel through it.Water waves are produced by liquid vibrations, whereas sound waves are produced by gas (air) vibrations. The student uses his second animation screen to investigate the three mechanical wave properties: amplitude, frequency, and wavelength.To learn more about mechanical waves, refer
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Is it accurate to say that galaxies take up most of the volume of space? Why or why not?
Answers
Answer:
ntergalactic space takes up most of the volume of the universe, but even galaxies and star systems consist almost entirely of empty space.
Explanation:
so to be exact galixes do make up most of the volume of space because galaxies are what make up space!
how do i calculate this?
Answers
CAR 1
Momentum = Mass/Velocity
M = 2100/20
M = 105 m/s^2
CAR 2
Momentum = Mass/Velocity
M = 2100/30
M = 70 m/s^2
The chart lists four different kinds of atoms.
A chart titled Different Kinds of Atoms with the entries calcium, gold, argon, iodine.
What is true about all of these atoms?
They cannot be solids.
They are the largest units of matter.
They are the only types of atoms that exist.
They cannot be divided and still keep the properties of the element.
Answers
They cannot be divided and still keep the properties of the element true about all of these atoms. Option D is corect.
What is an atom?The atom consists of matter that may be split without releasing electrical charges.
It's also the smallest unit of matter with chemical element features. As a result, the atom is the fundamental unit of science.
In the nucleus proton and the neutron is exists. The condition of the atom to be electrically neutral is that the number of the proton and electron should be the same.
They cannot be separated while still maintaining the element's characteristics for each and every one of these atoms.
Hence, option D is corect.
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Answer:
The correct answer is d, they cannot be divided and still keep the properties of the element.
Explanation:
You're welcome :)
In a ______ solar system, the planets orbit around the sun.
A. Geocentric
B. Monolithic
C. Heliocentric
D. Pericentric
Answers
Have a good day!
The International Space Station (ISS) orbits the Earth every 90 minutes. The Earth has an average radius of 6371 km and an approximate mass of m = 5.97 × 1024 kg. The gravitational force between two massive objects is calculated using the following formula: =∙m1m2,where=6.674×10−11m3⁄kg∙s2 If we assume the Earth to be spherical and the ISS orbit perfectly circular: a) Calculate the angular velocity of the ISS. (1) b) Calculate the height above the Earth’s surface at which the ISS orbits. (5) c) Calculate the tangential (linear) speed the ISS must travel to maintain this orbit. 2 Give your answer in km/h, rounded to the nearest whole number.
Answers
The angular velocity of the ISS is 0.012 rad/s. the height above the Earth's surface at which the ISS orbits is 408 km. the tangential speed of the ISS is 7 km/s.
a) Calculate the angular velocity of the ISS.
The angular velocity of the ISS can be calculated using the following formula:
ω = v / r
where:
ω is the angular velocity in radians per second
v is the tangential velocity in meters per second
r is the radius of the orbit in meters
The tangential velocity of the ISS is the speed at which it travels along the circumference of its orbit. The radius of the ISS's orbit is the distance from the center of the Earth to the ISS.
In this case, the tangential velocity of the ISS is 7.66 kilometers per second. The radius of the ISS's orbit is 6371 kilometers. Therefore, the angular velocity of the ISS is:
ω = 7.66 km/s / 6371 km = 0.012 rad/s
b) Calculate the height above the Earth’s surface at which the ISS orbits.
The height above the Earth's surface at which the ISS orbits can be calculated using the following formula:
h = r * (1 - (1 - e^2)^(1/2))
where:
h is the height above the Earth's surface in meters
r is the radius of the Earth in meters
e is the eccentricity of the orbit
The eccentricity of the ISS's orbit is 0.016. Therefore, the height above the Earth's surface at which the ISS orbits is:
h = 6371 km * (1 - (1 - 0.016^2)^(1/2)) = 408 km
c) Calculate the tangential (linear) speed the ISS must travel to maintain this orbit.
The tangential speed of the ISS can be calculated using the following formula:
v = ω * r
where:
v is the tangential speed in meters per second
ω is the angular velocity in radians per second
r is the radius of the orbit in meters
The angular velocity of the ISS is 0.012 rad/s. The radius of the ISS's orbit is 6371 kilometers. Therefore, the tangential speed of the ISS is:
v = 0.012 rad/s * 6371 km = 7.66 km/s
rounded to the nearest whole number: 7 km/s
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Which of the following are density labels?
g/mL
kg/L
cm^3/g
g/m
Answers
Answer:
Below
Explanation:
Density is mass / volume so any of these that have numerator mass and denominator volume qualify
g/ ml and kg/ L are the only ones
you hold a piece of string in two different locations around the balloon: describe what happens to the string in each location explain why.
Answers
If you hold a piece of string in two different locations around a balloon, the string will wrap around the surface of the balloon in each location. This happens because the string is under tension, and the tension forces it to curve and take the shortest path between the two points where it is being held.
The curvature of the string is due to the fact that the balloon's surface is not flat, but rather curved in three dimensions. The string follows the curve of the balloon's surface because it is the path of least resistance for the tension forces acting on the string.
In general, the curvature of the string will be more pronounced in areas where the surface of the balloon is more curved, and less pronounced in areas where the surface is flatter. If the balloon is perfectly spherical, the string will form a great circle that divides the surface of the balloon into two equal hemispheres.
Answer quick!!! (Edge 2021)
Haley noticed a small spot on her skin that turned out to be skin cancer. Which treatment is her doctor most likely to use?
A) Brachytherapy
B) Superficial external beam radiation therapy
C) Radiopharmaceuticals
D) High Intensity Focused Ultrasounds
Answers
B) Superficial External bean Radiation Therapy.
Explanation:
Surgery, radiation, chemotherapy and hormone therapy can all be used to relieve signs and symptoms. Medications may relieve symptoms such as pain and shortness of breath. Palliative treatment can be used at the same time as other treatments intended to cure your cancer.
The treatment most likely to use is Superficial External bean Radiation Therapy. Then the correct option is B.
What is the electromagnetic spectrum?The electromagnetic spectrum consists of the range of all types of EM radiation. Radiation is a packet of energy that travels and spreads out.
It has radio waves, infrared waves, visible light waves, ultraviolet rays, and microwaves.
They possess high energy even to penetrate deep within the material. the electromagnetic spectrum has a longer wavelength and less frequency.
Haley noticed a small spot on her skin that turned out to be skin cancer.
Surgery, radiation, chemotherapy, and hormone therapy can all be used to relieve signs and symptoms.
Medications may relieve symptoms such as pain and shortness of breath. Palliative treatment can be used.
The treatment most likely to use is Superficial External bean Radiation Therapy.
Then the correct option is B.
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