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Physics

Bentley

A book is sitting on a shelf that is 3.0 meters off the ground. Kinetic energy is found using the formula 1/2 times mass times speed. Potential energy is found by taking mass times g times height, with g as the constant, 9.8 m/s squared. What is needed to determine the mechanical energy used to move this book?

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Physics

Josie Strickland

Write a brief history on judo

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Physics

Priscilla Jefferson

What best describes a transverse wave?

A) The displacement of particles is opposite to the direction of wave motion.

B) The displacement of particles is perpendicular to the direction of wave motion.

C) The displacement of particles is in the same the direction of wave motion.

D) The displacement of particles is parallel to the direction of wave motion.

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Physics

Lyons

Air flows through a converging nozzle with inlet cross section area of 0.4 m2 with a velocity of 10 m/s. Calculate the velocity of air at outlet with cross sectional area of 0.3 m2. (incompressible)

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Physics

Eve Rich

A very smart 3-year-old child is given a wagon for her birthday. She refuses to use it. "After all," she says, "Newton's third law says that no matter how hard I pull, the wagon will exert an equal but opposite force on me. So I will never be able to get it to move forward." What would you say to her in reply?

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Physics

Madison Santiago

A rock has been formed by the accumulation of bits of rocks that were originally formed by the release of heat by magma. How should this rock be classified?

igneous rocks

sedimentary rocks

metamorphic rocks

organic rocks

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Physics

Maritza Bullock

The radius of curvature of a loop-the-loop for a roller coaster is 12.4 m. at the top of the loop (with the car inside the loop), the force that the seat exerts on a passenger of mass m is 0.80mg. find the speed of the roller coaster at the top of the loop.

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Physics

Hector

4. How far will a bus travel if it averages a speed of 65 km/hr for 7 hours?

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Physics

Cesar Mcmillan

Finish this sentence to describe whar happens ro potential energy: as the height of an object increases

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Physics

Krish Fox

Water, H2O, is made up of different elements, hydrogen and oxygen. Is this type of combination a mixture or a pure substance? A) Because water is composed of two separate elements, it is a mixture. B) Because water can be heated and fairly easily turned to steam, it is a mixture. C) Because water is composed of elements found in the periodic table, it is a pure substance. D) Because water molecules all have a consistent ratio of hydrogen to oxygen, it is a pure substance. E

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Physics

Asher Reese

Light from an incandescent source comes from

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Physics

Jaycee Wallace

Look at this check register. Calculate the current balance.

Check

Date

Transaction

(-)

Debit

(+)

Deposit

Balance

5/1

$82.92

8.00

78.24

005

5/3

5/15

5/17

Monthly Fee

Phone Bill

Paycheck

ATM

125.00

40.00

56.50

006

5/20

Tennis Lessons

The current balance is $

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Physics

Mayra Wiley

Scientists initially believed that the smallest particle of matter was the atom. Then, particles smaller than the atom were discovered.

What most likely contributed to the change in this theory?

new definition of theory

new technology

new generation of scientists

new way of thinking

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Physics

Emerson Conway

When conducting an investigation to determine which type of fertilizer produces the most flowers on a plant, which variable would be graphed on the x-axis once you collected the data?

A. type of fertilizer

B. amount of flowers

C. amount of water

D. number of days that the plants grew

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Physics

Issac Grant

What does the Doppler modal velocity represent

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