An electron and a proton

A) attract each other.
B) repel each other.
C) attract or repel depending on distance.


Answer: A

Physics & Space Science

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A particle moves along a circular path having a radius of 2.0 m. At an instant when the speed of the particle is equal to 3.0 m/s and changing at the rate of 5.0 m/s2, what is the magnitude of the total acceleration of the particle?

a. 7.5 m/s2 b. 6.0 m/s2 c. 5.4 m/s2 d. 6.7 m/s2 e. 4.5 m/s2

Physics & Space Science

Charge of uniform linear density 6.0 nC/m is distributed along the x axis from x = 0 to x = +3 m. Which of the following integrals is correct for the electric potential (relative to zero at infinity) at the point y = +4 m on the y axis?

A.


B.

C.

D.

E.

Physics & Space Science

A convex lens is thinnest in its center; it refracts light to a focus, while a convex mirror reflects it to the focus instead

Indicate whether the statement is true or false

Physics & Space Science

The strength of the Coriolis effect depends on

A) a planet's distance from the Sun. B) the amount of greenhouse gases in the atmosphere. C) a planet's size and rotation rate. D) a planet's temperature. E) the tilt of a planet's axis.

Physics & Space Science