Answers
Answer:
Umm, where is the pic
Explanation:
Answer:
no attachment
Explanation:
Please add attachment so I can answer
Related Questions
Question 3 of 10
The Moon has much less gravitational force than Earth. What would happen
if you went to the Moon?
OA. Your mass would decrease.
O
B. Your weight would increase.
O
C. Your mass would increase.
O
D. Your weight would decrease.
SUBMIT
Answers
Answer:
D
Explanation:
Mass is the amount of matter your body has ....does not change on the Moon.
there is less gravity .....so your WEIGHT would decrease
An electric generator at a power plant produces energy by passing superheated steam from a high temperature container (reservoir), through a pipe connected to a series of fans, and then into a low temperature reservoir. As the steam passes across the blades of the fans some of the heat energy of the steam is transformed into mechanical energy, which turns the fans which in turn are connected to a generator, which in turn converts the mechanical energy into electrical energy.If the high temperature steam has a temperature of 343.6 K and the low temperature reservoir has a temperature of 182.0 K, what is the Carnot efficiency of this process?
Answers
In order to calculate the Carnot efficiency, we can use the formula below:
\(e=1-\frac{T_c}{T_h}\)Where Tc and Th are the cold (low) and heat (high) temperature (in Kelvin).
So, using the given information, we have:
\(e=1-\frac{182}{343.6}=1-0.5297=0.4703=47.03\%\)Therefore the Carnot efficiency is 47.03%.
1. A sample of gas has a constant temperature and number of particles. As the volume of the gas sample is increased, the pressure of the gas will ________.
a. increase
b. decrease
c. remain constant
2. A sample of gas has a constant volume and number of particles. As the temperature of the gas sample is increased, the pressure of the gas will _______.
a. decrease
b. remain constant
c. increase
3. A sample of gas has constant pressure and number of particles. As the temperature of the gas sample is decreased, the volume of the gas will _______.
a. remain constant
b. increase
c. decrease
Answers
Answer:
1.C
2.C
3.C
Explanation:
hope its help hehe:(
Scrabble In the game of Scrabble, each player begins by drawing 7 tiles from a bag containing 100 tiles. There are 42 vowels, 56 consonants, and 2 blank tiles in the bag. Cait chooses an SRS of 7 tiles. Let p be the proportion of vowels in her sample.
(a) Is the 10% condition met in this case? Justify your answer.
(b) Is the Normal condition met in this case? Justify your answer.
Answers
A sample 7 size reflects less than 10 percent of the overall 100 population given. This suggests that the ten percent requirement has been satisfied. The requirement is met as a result.
Calculation-a) According to the 10% criterion, each group (in this case, vowels and consonants) must make up at least 10% of the sample's total population. Since there are 56 consonants and 42 vowels in the sample, 42% of the population is represented by each category, or 42/100. Since 0.42 exceeds 0.1, the 10% requirement is satisfied.
b) The Normal condition mandates that, for high sample sizes, the sample proportion be roughly regularly distributed. The sample size in this instance is 7, which is insufficient to satisfy the criteria for a big sample size. As a result, in this instance, the Normal criterion is not met.
When the sample size is big, will the sample means' sampling distribution be normally distributed?Regardless of the distribution of the population, the central limit theorem (CLT) states that the distribution of sample means approaches a normal distribution as the sample size increases. The CLT is frequently thought to hold for sample sizes equal to or larger than 30.
to know more about Scrabble here:
brainly.com/question/23125114
#SPJ4
A sample 7 size reflects less than 10 percent of the overall 100 population given. This suggests that the ten percent requirement has been satisfied. The requirement is met as a result.
a) According to the 10% criterion, each group (in this case, vowels and consonants) must make up at least 10% of the sample's total population. Since there are 56 consonants and 42 vowels in the sample, 42% of the population is represented by each category, or 42/100. Since 0.42 exceeds 0.1, the 10% requirement is satisfied.
b) The Normal condition mandates that, for high sample sizes, the sample proportion be roughly regularly distributed. The sample size in this instance is 7, which is insufficient to satisfy the criteria for a big sample size. As a result, in this instance, the Normal criterion is not met.
When the sample size is big, will the sample means' sampling distribution be normally distributed?Regardless of the distribution of the population, the central limit theorem (CLT) states that the distribution of sample means approaches a normal distribution as the sample size increases. The CLT is frequently thought to hold for sample sizes equal to or larger than 30.
To know more about Scrabble here:
brainly.com/question/23125114
#SPJ4
TIME REMAINING
02:21:09
Which is one characteristic shared by electromagnetic and mechanical waves?
Both have a frequency and amplitude.
Both move due to particles bumping into each other.
Both are formed by charged particles.
Both occur as a result of a disturbance.
Answers
Both types of waves, electromagnetic and mechanical, involve the transfer of energy through a mediumor through space. Option D
One characteristic shared by electromagnetic and mechanical waves is that both types of waves occur as a result of a disturbance. Waves, in general, are a means of transferring energy from one location to another without the physical displacement of particles.
Whether it's an electromagnetic wave or a mechanical wave, there needs to be a disturbance or source of energy that initiates the wave.
In the case of electromagnetic waves, such as light waves or radio waves, the disturbance is the oscillation of electric and magnetic fields. These fields interact with each other and propagate through space, carrying energy with them.
The disturbance can be caused by various sources, such as the acceleration of charged particles or the vibrations of atoms or molecules.
On the other hand, mechanical waves, such as sound waves or water waves, require a medium (substance) to propagate. The disturbance in mechanical waves is the vibration or oscillation of particles in the medium. For example, in a sound wave, the disturbance is the back-and-forth movement of air molecules caused by a vibrating object.
Both types of waves, electromagnetic and mechanical, involve the transfer of energy through a medium (in the case of mechanical waves) or through space (in the case of electromagnetic waves). They both require a disturbance to initiate the wave and share the fundamental property of wave motion. Option D
For more such questions on electromagnetic visit:
https://brainly.com/question/13874687
#SPJ8
Select the correct location of the image where does photosynthesis occur
Answers
Answer:
i believe its 3
Explanation:
uses of atmospheric pressure
Answers
Because mass is determined from protons
and neutrons, what conclusion can you
make?
Answers
Answer:
Electrons have virtually no mass
Explanation:
I had a test an this was the right answer^
Answer: Electrons have virtually no mass
Explanation: on edpuzzle that was the answer
Object 1 with mass 1=3.25 kg
is held in place on an inclined plane that makes an angle
of 40.0∘
with the horizontal. The coefficient of kinetic friction between the plane and the object is 0.535.
Object 2 with mass 2=4.75 kg
is connected to object 1 with a massless string over a massless, frictionless pulley. The objects are then released.
Calculate the magnitude
of the initial acceleration.
Calculate the magnitude
of the tension in the string once the objects are released.
Answers
The magnitude of the initial acceleration of the object is 4.2 m/s².
The tension in the string once the object starts moving is 13.65 N.
What is the magnitude of the initial acceleration?The magnitude of the initial acceleration of the object is calculated by applying Newton's second law of motion as follows;
F(net) = ma
m₂g - μm₁g cosθ = a(m₁ + m₂)
where;
m₁ and m₂ are the masses of the blocksg is acceleration due to gravityμ is coefficient of frictionθ is the angle of inclinationa is the acceleration(4.75 x 9.8) - (0.535 x 3.25 x 9.8 x cos40) = a(3.25 + 4.75)
33.5 = 8a
a = 33.5/8
a = 4.2 m/s²
The tension in the string once the object starts moving is calculated as;
T = m₁a
T = 3.25 x 4.2
T = 13.65 N
Learn more about acceleration here: https://brainly.com/question/14344386
#SPJ1
Earthquakes produce two kinds of seismic
waves: he longitudinal primary waves (called
P waves) and the transverse secondary waves
(called S waves). Both S waves and P waves
travel through Earth's crust and mantle, but
at different speeds; the P waves are always
faster than the S waves, but their exact speeds
depend on depth and location. For the pur-
pose of this exercise, we assume the P wave's
speed to be 8560 m/s while the S waves travel
at a slower speed of 5760 m/s.
If a seismic station detects a Pwave and
then 30.5 s later detects an S wave, how far
away is the earthquake center?
Answer in units of km.
Mi
Answers
Answer:
d
=
s
t
Explanation:
distance = speed * time
here, the distance is from the earthquake centre to the seismic station.
both the P and S waves travel from the earthquake centre before being detected by the seismic station, so the distance is the same for both.
the speeds are given as
8740
m
/
s
for the P wave and
4100
m
/
s
for the S wave.
we also know that the P wave arrives
47.4
seconds before the S wave.
we do not know the time that the P wave takes to travel, but we can denote it as
t
P
.
the time that the S wave takes to travel can be denoted as
t
P
+
47.4
, where time is in seconds.
for the S wave, speed * time is
4100
⋅
(
t
P
+
47.4
)
for the P wave, speed * time is
8740
⋅
t
P
.
since the distances that they travel are the same, the two expressions for speed * time are equal.
4100
⋅
(
t
P
+
47.4
)
=
8740
⋅
t
P
if you expand the brackets, you can find that
4100
t
P
+
194340
=
8740
t
P
then you can subtract
4100
t
P
:
4640
t
P
=
194340
and divide by
4640
to find
t
P
, which is the time that P takes to travel:
t
P
=
41.883
...
seconds
since distance = speed * time, the distance that the P wave travels is
t
P
⋅
the speed of P.
this is
41.883
s
⋅
8740
m
/
s
, which gives
366057.42
m
.
in kilometres, this is
366
k
m
to
3
significant figures.
how much rope is needed for 1 with the 1 fixed, 1 moveable pulley system
A.10 meters
B. 20 meters
C. 30 meters
D 40 meters
Answers
Answer:
c
Explanation:
1,000 J of energy are needed to melt 10 g of a solid substance that is already at its melting point. What is the heat of fusion of the substance?
Answers
1,000 J of energy are needed to melt 10 g of a solid substance that is already at its melting point , the heat of fusion of the substance is 548 joules .
What is heat of fusion ?Heat of fusion, also known as enthalpy of fusion or latent heat of fusion, is the amount of energy required to melt or freeze a substance under constant pressure conditions. When it comes to chemistry, "fusion" is basically synonymous with "melting." In the classroom, heat of fusion is typically used when a substance is at its melting or freezing point. In such instances, most people consider heat of fusion to be a constant.
Water, for example, has a heat of fusion of 334 J/g at its melting point of 0°C. At 0°C, one grams of liquid water requires 334 Joules of energy to completely freeze into ice. In addition, one grams of ice requires 334 Joules of energy to melt entirely.
q = m×∆Hf
q: Total change in heat energy (in Joules)
∆Hf: Heat of fusion of substance (in Joules per gram)
m: Mass of substance (in grams)
To know more about fusion heat , visit ;
brainly.com/question/14053504
#SPJ1
Two blocks, 1 and 2, are connected by a massless string that passes over a massless pulley. 1 has a mass of 2.25 kg and is on an incline of angle 1=42.5∘ that has a coefficient of kinetic friction 1=0.205. 2 has a mass of 5.55 kg and is on an incline of angle 2=33.5∘ that has a coefficient of kinetic friction 2=0.105
. The figure illustrates the configuration.
A system of two blocks connected by a rope passing over a pulley. The system sits atop a scalene triangle whose long edge forms the base. The pulley is attached to the apex of the triangle. Box M subscript 1 rests on the triangle edge to the left of the pulley, which makes an angle of theta subscript 1 with the base of the triangle. The coefficient of friction between box M sub 1 and the surface is mu subscript 1. Box M subscript 2 rests on the triangle edge to the right of the pulley, which makes an angle of theta subscript 2 with the base of the triangle. The coefficient of friction between box M sub 2 and the surface is mu subscript 2.
Answers
The force acting on the system of two blocks connected by a rope passing over a pulley is -13.26 N.
The system of two blocks connected by a rope passing over a pulley are M1 and M2, where M1 rests on the triangle edge to the left of the pulley, which makes an angle of theta subscript 1 with the base of the triangle. The coefficient of friction between box M1 and the surface is mu subscript 1. M2 rests on the triangle edge to the right of the pulley, which makes an angle of theta subscript 2 with the base of the triangle.
The coefficient of friction between box M2 and the surface is mu subscript 2. The system sits atop a scalene triangle whose long edge forms the base. The pulley is attached to the apex of the triangle.M1 has a mass of 2.25 kg and is on an incline of angle 1=42.5∘ that has a coefficient of kinetic friction 1=0.205. M2 has a mass of 5.55 kg and is on an incline of angle 2=33.5∘ that has a coefficient of kinetic friction 2=0.105.The free-body diagram of M1 shows that the weight of M1 acts straight downwards (vertically) and the normal force acts perpendicular to the slope.
The force of friction opposes the motion and acts opposite to the direction of motion.M1 = 2.25 kgTheta subscript 1 = 42.5 degreesMu subscript 1 = 0.205g = 9.81 m/s²In the free-body diagram of M2, the normal force acts perpendicular to the incline of the slope, the weight of the object acts vertically downwards and parallel to the incline, and the force of friction opposes the motion and acts opposite to the direction of motion.M2 = 5.55 kgTheta subscript 2 = 33.5 degreesMu subscript 2 = 0.105g = 9.81 m/s²The tension in the string is the same throughout the rope. Since the masses are being pulled by the same rope, the acceleration of the objects is the same as the acceleration of the rope.
The tension in the string is directly proportional to the acceleration of the objects and the rope.A system of two blocks connected by a rope passing over a pulley has a total mass of M. The acceleration of the system is given by the formula below:a = [(m1-m2)gsin(θ1) - μ1(m1+m2)gcos(θ1)] / (m1 + m2)Where, μ1 = 0.205 is the coefficient of friction of block M1θ1 = 42.5 degrees is the angle of the incline of block M1M1 = 2.25 kg is the mass of block M1M2 = 5.55 kg is the mass of block M2g = 9.81 m/s² is the acceleration due to gravitysinθ1 = sin 42.5 = 0.67cosθ1 = cos 42.5 = 0.75The acceleration of the system is:a = [(2.25-5.55)(9.81)(0.67) - (0.205)(2.25+5.55)(9.81)(0.75)] / (2.25 + 5.55)a = -1.7 m/s² (the negative sign indicates that the system is accelerating in the opposite direction).
The force acting on the system is given by:F = MaWhere M is the total mass of the system and a is the acceleration of the system. The total mass of the system is:M = m1 + m2M = 2.25 + 5.55M = 7.8 kgThe force acting on the system is:F = 7.8(-1.7)F = -13.26 N (the negative sign indicates that the force is acting in the opposite direction).
for more question on force
https://brainly.com/question/12785175
#SPJ8
The mass of an object is 100mg. What is the object's mass in kg? Show your work
Answers
Answer:
0.0001 kg
Explanation:
The weight in Kilograms is equal to the milligrams divided by 1,000,000.
100 ÷ 1,000,000
A 2800-lbm car climbs a 1160 ft. long uphill road which is inclined at 15o (to the horizontal) and covers the distance in 12 sec. Determine the power required if the car covers the distance (a) at constant velocity, (b) from an initial velocity, at the bottom of the hill, of 10 mph to a final velocity of 50 mph at the top of the hill and (c) from an initial velocity of 45 mph to a final velocity of 15 mph. Neglect the effects of friction and wind resistance.
Answers
Answer:
a) P = 70054.3 W, b) P = 18820 W, c) P = 14116.7 W
Explanation:
Power is defined as work per unit of time
P = W / t = F x / t
P = F v
a) in this case the velocity is constant, let's use the equilibrium relation to find the force.
Let's set a reference system with the x axis parallel to the plane
F - Wₓ = 0
F = Wₓ
with trigonometry let's decompose the weight
sin θ = Wₓ / W
Wₓ = W sin θ
F = W sin 15
F = 2800 sin 15
F = 724.7 lb
we look for the speed, as it rises with constant speed we can use the relations of uniform motion
v = x / t
v = 1160/12
v = 96.67 ft / s
we calculate the power
P = 724.7 96.67
P = 70054.3 W
b) In this case, the speed of the vehicle changes during the ascent, so we use the relationship between work and the change in kinetic energy
W = ΔK
W = ½ m v_f² - ½ m v₀²
let's reduce to the SI system
v₀ = 10 mph (5280 ft / 1 mile) (1h / 3600 s = 14.67 ft / s
v_f = 50 mph (5280 ft / 1 mile) (1 h / 3600s) = 73.33 ft.s
mass : m = w / g
W = ½ 2800/32 (73.33² - 14.67²)
W = 225841 J
we calculate the average power
P = W / t
P = 225841/12
P = 18820 W
c) we repeat the previous procedure
v₀ = 45 mph = 66 ft / s
v_f = 15 mph = 22 ft / s
W = ½ 2800/32 (22² - 66²)
W = -169400 J
P = W / t
P = 169400/12
P = 14116.7 W
The reliability or reproducibility of a measurement is its _____
Answers
The degree of data stability when the measurement is replicated under identical circumstances is known as reproducibility or reliability.
What exactly are repeatability and reproducibility?Reproducibility determines how an entire study an experiment can be replicated, whereas repeatability assesses the variation in data made by a single equipment or human under similar circumstances.
What makes repeatability crucial?Science needs reproducibility because it enables more in-depth investigation, and replication validates our findings. There are several investigations and experiments, which result in a wide range of variables, unforeseen, and things that are either outside your influence or you cannot guarantee.
To knw more about measurement visit:
https://brainly.com/question/2107310
#SPJ1
if a car collides with a moving bus, what type of relationship exists between the force of the car and the force of the bus?
A: forces are not equal and in the opposite direction
B: forces are equal and in the same direction
C: forces are equal but opposite in direction
D: forces are not equal but in the same direction
Answers
Answer:
C: forces are equal but opposite in direction
Explanation:
If both objects are moving you know this is an elastic collision and therefore the bus and car will travel in opposite directions after the collision with equivalent forces.
if a car collides with a moving bus, the type of relationship exists between the force of the car and the force of the bus is the forces are equal but opposite in direction.
What are the types of force ?Force can be defined as pushing or pulling of any object resulting from the object’s interaction or movement, without force the objects can not be moved, can be stopped or change the direction.
Force is a quantitative interaction between two physical bodies, means an object and its environment, there are different types of forces in nature.
If an object in its moving state will be either static or motion, the position of the object will only be changed if it is pushed or pulled and The external push or pull upon the object called as Force.
The contact force types are the force that occurs when we apply some effort on an object such as Spring Force, Applied Force, Air Resistance Force, Normal Force, Tension Force, Frictional Force
Non-Contact forces are another type of forces occur from a distance such as Electromagnetic Force, Gravitational Force, Nuclear Force
For more details Force, visit
https://brainly.com/question/13691251
#SPJ2
How did earth change about 2.5 billion years ago when many organisms began using photosynthesis to make food
A. The amount of oxygen in the atmosphere increased
B. Mass extinctions occurred
C. The oceans became larger
D. Rainfall increased
Answers
what is the value of pi(8.104)^2 written with correct significant numbers
Answers
Answer:206.3
Explanation:
if you apply a force of 15N on a box of mass 5.2kg at an anle of 27 degrees below the horizontal, what is the magnitude of the force that the ground exerts back on the box?
Answers
The required magnitude of the force that the ground exerts back on the box is approximately 15.04 N.
What is force?Force is defined as an object which is in a state of motion then its rate of change of momentum is called force.
Here,
To determine the magnitude of the force that the ground exerts back on the box, we need to use Newton's third law, which states that every action has an equal and opposite reaction. In this case, the force applied by the person (15N at 27 degrees below the horizontal) is the action, and the force exerted by the ground back on the box is the reaction.
First, we need to resolve the applied force into its horizontal and vertical components. The horizontal component of the force is given by:
F_horizontal = F_applied * cos(theta)
F_horizontal = 15N * cos(27°)
F_horizontal ≈ 13.36 N
Similarly,
F_vertical ≈ 6.92 N
F_ground_vertical = -6.92 N
F_ground_horizontal = -13.36 N
Finally, we can find the magnitude of the force exerted by the ground on the box using the Pythagorean theorem:
F_ground = √(F_ground_horizontal² + F_ground_vertical²)
F_ground = √((-13.36 N)² + (-6.92 N)²)
F_ground ≈ 15.04 N
Therefore, the magnitude of the force that the ground exerts back on the box is approximately 15.04 N.
Learn more about force here:
https://brainly.com/question/26115859
#SPJ1
A double-pane glass window is 60.0 cm x 90.0 cm and has 3.00-mm window panes. If the temperature difference between inside and outside is 24.0 K, how far apart should the panes be to have a heat loss of 4.09 W? Assume there is air in the gap.
Answers
The distance between the glass to have the given heat loss is 2.54 m.
The given parameters:
dimension of the window, = 60 cm by 90 cmtemperature, T = 24 Kheat lost, Q = 4.09 Wthermal conductivity of glass, k = 0.8 W/mKThe area of the glass window is calculated as follows;
\(A = 0.6 \times 0.9\\\\A = 0.54 \ m^2\)
The distance between the glass is calculated as follows;
\(Q = \frac{KA \Delta T}{\Delta x} \\\\\Delta x = \frac{kA \Delta T}{Q} \\\\\Delta x = \frac{0.8 \times 0.54 \times 24 }{4.09} \\\\\Delta x = 2.54 \ m\)
Thus, the distance between the glass to have the given heat loss is 2.54 m.
Learn more here:https://brainly.com/question/14605957
You are sitting on a Ferris wheel moving at a constant speed of 8 m/s. When you are at the bottom of the rotation, what is the normal force of the seat on you if you have a mass of 50 kg and the radius of the Ferris wheel is 10 m
Answers
Answer:
40NExplanation:
Formula for calculating normal force is expressed as:
\(F = ma\\since \ a = \frac{v^2}{r} \\F = \frac{mv^2}{r}\)
m is the mass of the body = 50kg
v is the velocity of the Ferris wheel = 8m/s
r is the radius of the Ferris wheel
Substitute into the formula:
\(F = \frac{50 \times 8}{10}\\ F = \frac{400}{10}\\ F = 40N\\\)
Hence the normal force of the seat is 40N
Which region of electromagnetic spectrum will provide photons of the least energy
Answers
Answer:
Explanation:
Radio waves
Radio waves have photons with the lowest energies. Microwaves have a little more energy than radio waves. Infrared has still more, followed by visible, ultraviolet, X-rays and gamma rays.
Compare and contrast heat and temperature. Cite examples from the readings to support your comparison. Also cite examples from what you may already know.
(THIS NEEDS TO BE LONG I WILL GIVE 100 POINTS!!!!)
Answers
Answer:
Heat is a form of energy. It is measured in Joules. ... The temperature of an object relates to both the kinetic energy of its particles and the number of particles. Temperature is the average kinetic energy of the particles in a substance.
Explanation:
The half-life of Silver-105 is 3.57 x 106 seconds. A sample contains 5.78 x 1017 nuclei. What is the decay constant for this decay?
Answers
Answer:
The decay constant, or "lambda" (λ), is the rate at which a radioactive isotope decays. It is usually measured in units of inverse time, such as seconds. In this case, the decay constant can be calculated as follows:
16:42
λ = (ln(2)/3.57 x 106) x (5.78 x 1017) = 0.
Explanation:
what was the significance of jumping a.keep the snake b.keep feet cleans c.avoid the hot water d.avoid the Bumbo stick
Answers
Answer:
D I think I’m not for sure
Explanation:
A soccer ball is kicked with an initial horizontal velocity of 11 m/s and an initial vertical velocity of 17 m/s.
1)what is the initial speed of the ball?20.25 m/s
2)what is the initial angle 0 of the ball with respect to the ground? 57.09 degrees
3)what is the maximum height the ball goes above the ground? 14.74m
I need help with 4,5 and 6
4)How far from where it was kicked will the ball land?
5) what is the speed of the ball 2.5 second after it was kicked?
6)how high above the ground is the ball 2.5 seconds after it is kicked?
Answers
The answers are 4. The distance from where the ball was kicked is 38.06 meters, 5. The speed of the ball 2.5 seconds after it was kicked is 13.82 m/s, and 6. The ball is 21.88 meters above the ground 2.5 seconds after it is kicked.
4) To calculate the distance from where the ball was kicked, we need to find the time it takes to reach the ground. We can use the fact that the vertical displacement of the ball is zero at the highest point. Using the formula vf = vi + at, the time it takes to reach maximum height is t = vf / g where g is the acceleration due to gravity which is -9.8 m/s² since it is downward and vf is the final velocity which is 0 because the ball comes to rest at the highest point. t = 17 / 9.8 = 1.73 s. This means the total time for the ball to hit the ground is 2 x 1.73 = 3.46 s. Using the formula for horizontal distance traveled d = vt, we get d = 11 x 3.46 = 38.06 m. So, the distance from where the ball was kicked will be 38.06 meters.5) To calculate the speed of the ball 2.5 seconds after it was kicked, we need to find the horizontal and vertical components of the velocity of the ball at 2.5 seconds. The horizontal component is constant, so it will still be 11 m/s. To find the vertical component, we use the formula vf = vi + at where vi is initial velocity, a is acceleration due to gravity which is -9.8 m/s² and t is the time which is 2.5 seconds. vf = 17 + (-9.8 x 2.5) = -7.5 m/s. Since the ball is moving downward, the velocity is negative. Therefore, the speed of the ball 2.5 seconds after it was kicked is sqrt(11² + (-7.5)²) = 13.82 m/s.6) To calculate how high above the ground is the ball 2.5 seconds after it is kicked, we use the formula for the displacement of an object in the vertical direction y = vi*t + (1/2)*a*t² where vi is initial velocity, a is acceleration due to gravity which is -9.8 m/s² and t is the time which is 2.5 seconds. y = 17*2.5 + (1/2)*(-9.8)*(2.5)² = 21.88 m. So, the ball is 21.88 m above the ground 2.5 seconds after it is kicked.For more questions on speed
https://brainly.com/question/13943409
#SPJ8
how is sound produced by using pipel wind instruments
Answers
Answer33
Explanation
33
When a solid object is subjected to a tension
force, T on both ends it will stretch by a distance
denoted AL. A quantity called the strain,
denoted by & is the distance stretched, AL
divided by the original length of the object, Lo,
i.e. & = AL/Lo. For many materials, the
applied tension force is measured to be linearly
proportional to the strain times the cross-
sectional area, A of the object i.e.
ΤαεΑ
The figure shows an object with a circular cross-
section of diameter d and original length Lo. If
object 2 has twice the diameter and twice the
starting length of object 1 (and is made of the
same material), what must be the ratio T₂/T₁ so
that the two objects have the same strain.
Answers
The tension force on object 2 must be one-fourth the tension force on object 1. The correct option is D.
How to explain the valueThe cross-sectional area is directly proportional to the square of the diameter, or A = πd²/4.
The Young's modulus is a constant for a given material.
Therefore, the change in length is proportional to the tension force and the square of the diameter.
For the two objects to have the same change in length, they must also have the same tension force.
The tension force is inversely proportional to the cross-sectional area, or F = EA/L0.
Therefore, the tension force is inversely proportional to the square of the diameter.
If object 2 has twice the diameter of object 1, then it will have four times the cross-sectional area.
Therefore, the tension force on object 2 must be one-fourth the tension force on object 1.
In other words, T2/T1 = 1/4.
Learn more about tension on
https://brainly.com/question/24994188
#SPJ1
What is the speed of a baseball that travels 49 meters in 2.8 seconds?
(I will mark first answer Brainliest!)
Answers
Answer:
49 meter per second is the speed of the baseball
Explanation:
thank me later