Unit Test — Cumulative exam

Question 1

How are the electric field lines around a positive charge affected when a second positive charge is near it?

Revolt · Accepted Answer

The field lines bend away from the second positive charge.

Question 2

Which conditions produce low pitches from a guitar string?

Revolt · Accepted Answer

long strings, less tension, thick strings

Question 3

Which refers to an object’s resistance to any change in its motion?

Revolt · Accepted Answer

inertia

Question 4

Under which condition is no work done?

Revolt · Accepted Answer

A force pushes up on an object that stays in place.

Question 5

A scientist on Earth drops a hammer and a feather at the same time an astronaut on the moon drops a hammer and a feather.

Revolt · Accepted Answer

The hammer hits the ground before the feather on Earth, and the hammer and feather hit at the same time on the moon.

Unit Test — Cumulative exam Answers