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Physics

Nicolas Arias

Cleaning tarnished silver is an example for which of the following.

chemical change

chemical property

physical change

physical property

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Physics

Ryker Sandoval

An electron moves at some arbitrary angle to the magnetic field direction (B is in + zˆ direction). The trajectory is a helix with some pitch d. Considering the velocity of an electron in XY plane v and in + z direction vz find d. Hint - consider XY and Z motion independent and calculate the period of circular motion.

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Physics

Peyton Mcdaniel

Select the major problems associated with the production of nuclear energy.

air pollution

hazardous solid wastes

depletion of natural resources

potential reactor accidents

harm to animal and plant life Next Question

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Physics

Shawn

Seismic waves are divided into what two types

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Physics

Ronan

The changes that occur during puberty in girls are signaled by what hormone?

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Physics

Felix Terrell

According to Einstein's special theory of relativity, the speed of light in a vacuum would be 3.0 108 m/s in which frames of reference?

A. All frames of reference, regardless of acceleration

B. Frames of reference that are accelerating

C. Frames of reference that change velocity

D. Frames of reference that are not accelerating

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Physics

Shawn

Neglect air resistance in this question. If you drop a ball from a height of 4.9 m, it will hit the ground 1s later. If you fire a bullet exactly horizontally from a height of 4.9 m, it will also hit the ground 1s later. Explain.

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Physics

Emelia Oconnor

If a car decelerates at a rate of 5.1 m/s2, and if its initial speed was 24 m/s. How long will it take the car to stop?

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Physics

Nicolas Schroeder

Why do automobiles rust more easily in wet climates than drier climates?

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Physics

Cassius Barton

You are preparing to do a hard task and so you say to yourself, "I can do it!" What is this an example of?

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Physics

Adriel Waller

You took a running leap off a high diving platform. You were running at 3.1 m/s and hit the water 2.4 seconds later. How high was the platform, and how far from the edge of the platform did you hit the water? Assume your initial velocity is horizontal. Ignore air resistance.

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Physics

Mariah Campbell

How does a boulder change

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Physics

Russell Clarke

Difference between impulse and impulsive force

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Physics

Elaine Camacho

Explain the differences between a physical and chemical change, and give examples of each.

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Physics

Frida Stephens

Water, which we can treat as ideal and incompressible, flows at 12 m/s in a horizontal pipe with a pressure of 3.0 x 10^4 Pa. If the pipe widens to twice its original radius, what is the pressure in the wider section?

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