A pool player makes a shot on a pool table. The 0.17 kg cue ball strikes the 0.15 kg #8-ball, but it is not sunken on the table. Instead, the 8-ball bounces off a rail, and collides into the cue ball a second time. When they collide in a perfectly elastic collision, the cue ball is travelling 1.2 m/s [N10°E) and the 8-ball is travelling 0.89 m/s [W20°N]. Determine the final velocities of each ball.

Answers

Answer 1

Answer:

  cue ball final: 0.85 m/s at N65°W

  8-ball final: 1.27 m/s at N12°E

Explanation:

In a perfectly elastic collision, both momentum and energy are conserved. The momentum is the sum of products of mass and velocity. The energy is half the product of mass and the square of velocity. The difference of "particle" velocities changes sign as a consequence of the collision.

__

equations for final velocity

If we let the masses be m1 and m2, the corresponding initial velocities be v1 and v2, and the final velocities be u1 and u2, we have ...

  m1·u1 +m2·u2 = m1·v1 +m2·v2 . . . . . . . conservation of momentum

  u1 -u2 = v2 -v1 . . . . . . . . . . . . . . . relative velocity sign changes

This pair of linear equations can be solved for u1 and u2 in any of the usual ways to give ...

  u1 = v1(m1 -m2)/(m1 +m2) + v2(2·m2)/(m1 +m2)

  u2 = v2(m2 -m1)/(m1 +m2) +v1(2·m1)/(m1 +m2)

__

application to this problem

Using angle measures as clockwise from north, we are given ...

  cue ball: m1 = 0.17 kg, v1 = 1.2∠10° m/s

  eight ball: m2 = 0.15 kg, v2 = 0.89∠-70° m/s

A suitable calculator can find the final velocities using the above equations.

The first attachment shows the calculations using a TI-84 work-alike calculator.

  cue ball final: 0.85 m/s at N65°W

  8-ball final: 1.27 m/s at N12°E

The second attachment shows a vector diagram of the velocities.

A Pool Player Makes A Shot On A Pool Table. The 0.17 Kg Cue Ball Strikes The 0.15 Kg #8-ball, But It
A Pool Player Makes A Shot On A Pool Table. The 0.17 Kg Cue Ball Strikes The 0.15 Kg #8-ball, But It

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How to prepare for physics ATP exam o'levels?

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Spend time on this subject. Physics may have some concepts which are difficult for students to understand in some cases. A key example is electricity and magnetism. Spend extra time on topics you find difficult and most of all, remember to do PAST PAPERS. These will be your light in the dark, your teachers, your friends. Continue to do them, and remember to leave one unsolved before your examinations. This will orient your mind for the examination and let you achieve the maximum marks possible.

Without using a micrometer screw gauge, how do I find the average diameter of a long piece of thin wire using a metre rule and a uniform glass rod?​

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Answer:

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Answer:

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what does goin to get da milk mean

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Answer:

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Explanation:

mark me as brainiest

Getting the milk is what it means

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Answer:

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The space exploration program should continue, and should receive continued generous annual funding.

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These people who get the money spend it to buy homes, cars, clothes, beer and bread, and send their children to school ... exactly the same things other Americans do with the money they earn on their jobs.

Just because the most visible product of this industry gets shot into space and never comes back does NOT mean that the money to do it is also lost forever.  It's taxpayer money that the government pours straight back into the nation's economy, through the hands of the workers and scientists who operate the US space program.  

An ideal single movable pulley requires an input force that is one-half the ouput force.
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I believe the correct answer is : True

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wave-particle duality

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Answer:

wave-particle duality

Explanation:

Answer:

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2. In the photoelectric effect, electrons are ejected by matter (Answer: The energy from the waves of light coming from bright lights)

3. Light can be passed through two slits and projected onto a screen. (Answer: The spots are the result of interference, which happens with waves but not particles.)

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6. Which is a statement of reasoning about the two-slit interference experiment? (Answer: When the electromagnetic wave peaks overlap)

--Your Welcome ig--

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Because of its crystal scructure, usually under normal circumstances aluminum is not magnetic.  This is why the magnet does not stick to the plate. The aluminium material is referred to as a paragmetic material, it shares this classification with other metals such as Lithium and Magnesium.

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Answer: B, the speed of baseball pitch

Explanation:

The speed of a baseball pitch is an example of a measurement that considers velocity, therefore the correct answer is option B.

What is speed?

The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object. The unit of speed is a meter/second.

average speed = total distance /Total time

The speed of the baseball pitch is an example of the measurement of velocity.

The size of a  standard basketball is an example of the measurement of length.

similarly, option C and option d are unrelated to the measurement of the velocity.

The correct response is option B since a baseball pitch's speed is an example of a measurement that takes velocity into account.

To learn more about speed from here, refer to the link;

brainly.com/question/7359669

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how can magnets cause objects to have kinetic energy?
please help asap

Answers

A magnetic force can convert kinetic energy stored in a magnetic field to potential energy.
Answer:if there is a system of magnets in one place, there'll be potential energy,and when the potential energy is released,the energy gets converted into kinetic energy and the magnet moves

Hope this helps!
Have a nice day!

WILL GIVE BRAINLIEST!!!
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o C. 100.0
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Answers

Answer:

1/Re=1/R1  +1/R2= 2x1/R1=2/R1=2/R2=2/50=1/25

1/Re=1/25, so the answer is Re= 25

the answer is A. 25.0

Answer:

A. 25.0

Explanation:

1/Re = 1/R1 + 1/R2 = 2 x 1/R1 = 2/R1 = 2/R2 = 2/50 = 1/251/Re = 1/25
The answer is Re= 25


I hope this helps! Have a great day!

Anygays-

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Answer:

They release large amounts of carbon dioxide when burned.

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Answers

Answer:

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Answer:

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Questions #7 and 8:

Part 1 of 2: An ideal gas, initially at a volume of 6.22222 L and pressure of 9 kPa, undergoes isothermal expansion until its volume is 8 L and its pressure is 7 kPa. Calculate the work done by the gas during this process. Answer in units of J.

Part 2 of 2: Find the heat added to the gas during this process. Answer in units of J.

Answers

(a) The work done by the ideal gas during the isothermal exapnsion process is -3.556 J.

(b) The heat added to the gas during this process is 3.556 J.

Work done by the ideal gas

The work done by an ideal gas in isothermal expansion is change in pressure and volume of the gas. The change in the internal energy of the gas is zero.

The work done by the given ideal gas is calculated as follows;

W = ΔPV

where;

ΔP is change in pressure of the gasΔV is change in volume of the gas

W = (P₂ - P₁)(V₂ - V₁)

W = (7kPa - 9kPa)(8L - 6.222L)

W = -3.556 kPa.L

1 kPa.L = 1 J

W = -3.556 J

Heat added to the process

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Answers

Answer:

As per Provided Information

Mass of car m is 1400KgInitial velocity u is 13m/sTime taken to stop t is 5 second .Final velocity v is 0m/s

we have been asked to determine the force applied to stop the car. First we will calculate the acceleration of the car.

[tex] \boxed{\bf \: a \: = \dfrac{(v - u)}{t}}[/tex]

Substituting the value and let's solve it

[tex] \longrightarrow\sf \: a \: = \dfrac{0 - 13}{5} \\ \\ \\ \longrightarrow\sf \: a \: = \cfrac{ - 13}{5} \\ \\ \\ \longrightarrow\sf \: a \: = - 2.6 \: {ms}^{ - 2} [/tex]

Now, let's calculate the force applied to stop the car .

[tex] \pink{\boxed{\bf \: F = ma}}[/tex]

Substituting the value we get

[tex] \longrightarrow \sf \: F = 1400 \times ( - 2.6) \\ \\ \\ \longrightarrow \sf \: F = - 3640 \: N[/tex]

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Therefore,

3640 Newton force is required to stop the car .

a 65 kg climber on top of Mount Everest (8800 m high). what is the gravitational potential energy?

Answers

Answer:

He has 5,609,404 J of potential energy

Explanation:

P.E. = M*G*H

65 * 9.8^2 * 8800

The potential energy of the climber whos weight is 65 kg at a height of 8800 m is 5.6 × 10⁶ Joules.

What is Potential energy?

The potential energy of a body is defined as that generated by virtue of its position which is the form of energy stored in an object when it is at rest. When a body stops its motion, its kinetic energy is converted into potential energy.

Potential energy is related to the mass 'm' and height 'h' of the object from the ground and the acceleration due to gravity g is expressed as:

PE = m g h.

For above given information, mass of the climber = 65 Kg

Height of the mountain = 8800 m

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Thus, PE = 65 kg × 8800 m × 9.8 m/s² = 5.6 × 10⁶ Joules.

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Learn more about Potential energy, here:

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When planets begin to melt, the materials in them begin to separate from one another. The heaviest materials, such as metallic iron, sink to form cores. Low-density magmas rise, forming crusts. This process is called differentiation.

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Answer:

Labeling from top left to bottom right

A) transmission - direct light being transmitted as direct light

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Which of the following describes the conditions for an inelastic collision?
(A) momentum conserved, kinetic energy conserved
(B) momentum conserved, kinetic energy not conserved
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Answers

i believe its B) momentum conserved, kinetic energy not conserved

hope this helped

Answer: I think it is C.

Explanation: In an inelastic collision, the object hits the item and stays with it. Therefore, both momentum and kinetic energy need to be presen.t

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6th Grade Earth science

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Answer:

Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors. Conditions like these are found deep within the Earth or where tectonic plates meet.

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Visible light (see the image attached)

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That is called the normal force. Hoped it helped you :)

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Answers

Answer:

0.20 Hz

Explanation:

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A particle moves in the xy plane in a circle centered on the origin. at a certain instant the velocity and acceleration of the particle are 6. 0 m/s and (3. 0 + 4. 0) m/s2. what are the x and y coordinates of the particle at this moment?

Answers

The x and y coordinates of the particle at this moment is (6x + 4.5y) m.

Position of the particle

The position of the particle at any instant is determined from the velocity and acceleration of the particle as shown below.

v² = u² + 2as

where;

v is the final velocity of the particleu is the initial velocitya is the acceleration of the particles is the position of the particle

v² = 0 + 2as

v² = 2as

s = v²/2a

X and y - coordinates of the particle

[tex]s_x = \frac{v^2}{2a_x} = \frac{6^2}{2(3)} = 6\ m\\\\s_y = \frac{v^2}{2a_y} = \frac{6^2}{2(4)} = 4.5 \ m\\\\s = (6 x \ + 4.5y)m[/tex]

Thus, the x and y coordinates of the particle at this moment is (6x + 4.5y) m.

Learn more about position of a particle here: https://brainly.com/question/2560794

1. What is the approximate age of the fossil described in the activity?
1.8 million years
18 million years
.9 million years
90 million years

Answers

Answer:

B.

Explanation:

It should be B. 18 million years ago.


I apologize if it is incorrect-

I hope it helps! Have a great day!

Anygays-

Answer:

B. 18 million years

Explanation:

The answer is B. 18 million years


I hope it helps! Have a great day!

Muffin ^^

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