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Physics

Kolton Parks

What evidence can you cite for the particle nature of light? 1. Refraction phenomenon of light 2. The many colors of light 3. Diffraction phenomenon of light

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Physics

Alfredo

The orientation of which of the following does not influence the phases of the moon?

a.

Earth

c.

Sun

b.

the moon

d.

Stars

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Physics

Bruno Kirby

What force is responsible for the slowing of the ball?

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Physics

Tomas Carr

A universal law is a principle that is in effect everywhere at all times. Which example is likely to be a universal law? A. the force of attraction between two objects B. the model of the atom C. objects with like charges attract D. the theory of the atom

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Physics

Cristian Walker

Explain why a construction worker who uses a jackhammer on a rock does not produce a metamorphic rock.

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Physics

Hector Campos

What was the average speed in km/h of a car that travels 400.0 km in 4.5 h?

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Physics

Malcolm

Which of the following statements is true of a gas?

It has a fixed volume, but not a fixed shape

It has closely packed molecules

It can change into a liquid by adding heat

It takes the shape and size of a container

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Physics

Roselyn Melton

A galvanometer with a resistance of 40.0 ω deflects full scale at a current of 2.0 ma. what resistance should be used with this galvanometer in order to construct a voltmeter that can read a maximum of 50 v?

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Physics

Jasiah Ramirez

What behavioral characteristic do neurons share with muscle?

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Physics

Dominik Small

Now that we have a feel for the state of the circuit in its steady state, let us obtain the expression for the current in the circuit as a function of time. Note that we can use the loop rule (going around counterclockwise) : E-vR-vL=0. Note as well that vR=iR and vL=Ldidt. Using these equations, we can get, after some rearranging of the variables and making the subsitution x=ER-i, dxx=-RLdt. Integrating both sides of this equation yields x=x0e-Rt/L. Use this last expression to obtain an expression for i (t). Remember that x=ER-i and that i0=i (0) = 0. Express your answer in terms of E, R, and L. You may or may not need all these variables. Use the notation exp (x) for ex.

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Physics

Guest

How to determine power

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Physics

Kim

If you exert a force of 100.0 N to lift a box a distance of 0.5 m, how much work do you do? 200 J 400 J 50 J 26 J

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Physics

Charlotte

A force of 20N pushes an object of mass 5.0kg along a rough surface of 5.0N

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Physics

Josephine Mcdonald

If you drag a sled across the ground, the sled experiences what kind of friction?

A. Kinetic friction

B. rolling friction

C. static friction

D. cohesive friction

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Physics

Guest

Which wave diffracts the most when encountering an obstacle?

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