In general, the friction involved in sliding an object is ___ the friction involved in rolling an object.

less than

greater than

equal to

What happens to the charge lost by an object?

Snowboarding cautiously down a steep slope at a speed of 5.3 m/sec, Sarah, whose mass is 53.0 kilograms, is afraid she won't have enough speed to travel up a slight uphill grade ahead of her.

A car travels 20 km west, then 20 km south. what is the magnitude of its displacement? A) 0 km B) 20 km C) 28 km D) 40 km

What type of wave borders the violet end

What event happens about once every month? A. a revolution of the Earth around the Sun B. a rotation of the Earth C. a full Moon D. a lunar eclipse

The airbag inflates and deflates quickly so

Two conducting spheres are each given a charge Q. The radius of the larger sphere is three times greater than that of the smaller sphere.

A solenoid with a ferromagnetic core is

When Cannon and Washburn measured stomach contractions with a balloon, they found that?

An astronaut weighs 104 newtons on the moon, where the strength of gravity is 1.6 newtons per kilogram. What would she weigh on Mars?