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Physics

Raiden Rice

John rows his canoe due east across a river at 5.5 miles per hour. if the river is flowing south at 4 miles per hour, find john's direction.

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Physics

Collier

If jim exerts a force of 2.0 N on a shopping cart, what force does the shopping cart exert on jim?

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Physics

Cornelius Meadows

A substance made up of 2 or more elements is called

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Physics

Dingo

Matching fossils go with what hypothesis?

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Physics

Valeria Tucker

The most powerful tugboats in the world are built in Finland. Theseboats exert a force with a magnitude of 2.85 * 10^6N. Suppose one ofthese tugboats is trying to slow a huge barge that has a mass of 2.0 * 10^7kg and is moving with a speed of 3.0 m/s. If the tugboat exerts its maximum force for 21 s in the direction opposite to that in which thebarge is moving, what will be the change in the barge's momentum? Howfar will the barge travel before it is brought to a stop?

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Physics

Leland Pope

Which of the following describes a chemical change

A. burning paper

B. freezing water

C. melting ice

D. bending a wire

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Physics

Morgan Nixon

Which of the following must be true of a quantized measurement?

A. It cannot be precisely known.

B. It can only be a measurement of energy.

C. It must have a smallest possible value.

D. It could have any value, limited by the accuracy of your equipment.

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Physics

Jovanny Figueroa

A silver bar 0.125 meter long is subjected to a temperature change from 200°C to 100°C. What will be the length of the bar after the temperature change?

A. 0.0000189 meterB. 0.00002363 meterC. 0.124764 meterD. 0.00023635 meter

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Physics

Talon Lloyd

A person with a mass of 15kg is walking uphill at a velocity of2m/s. What is the walker's momentum?

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Physics

Kendall Bartlett

A stone is dropped off a cliff in 3.55s how high is the cliff?

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Physics

Krueger

To practice Problem-Solving Strategy 15.1 Mechanical Waves. Waves on a string are described by the following general equation y (x, t) = Acos (kx-ωt). A transverse wave on a string is traveling in the + x direction with a wave speed of 8.50 m/s, an amplitude of 5.50*10-2 m, and a wavelength of 0.500 m. At time t=0, the x=0 end of the string has its maximum upward displacement. Find the transverse displacement y of a particle at x = 1.52 m and t = 0.150 s.

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Physics

Guest

When studying atoms, scientists can ignore the blank force between charged particles that make up the atoms because it is many millions of times smaller than other forces in the atom

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Physics

Gideon Montes

The buoyant force on an object is equal to the weight of the

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Physics

Hugh Costa

The__of force will determine the ___of acceleration. A. direction, direction B. direction, amount C. Amount, direction D. none of the above

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Physics

Denzel Boyd

Two identical spheres of equal mass a distance of 10 m apart a surface gravity of 0.0050 to each other where are the masses

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