If there is no slipping, a frictional force must exist between the wheels and the ground. in what direction does the frictional force from the ground on the wheels act? take the positive x direction to be to the right.

Which is not a primary color of light? a) green b) blue c) yellow d) red

A hollow, conducting sphere with an outer radius of 0.240 m and an inner radius of 0.200 m has a uniform surface charge density of + 6.67 * 10^-6 C/m^2. A charge of - 0.600 μC is now introduced into the cavity inside the sphere.

An arrow is shot at a 30 degrees angle with the horizontal. It has a velocity of 49 m/s. How high up does it go?

A ball is thrown straight upward from ground level with a velocity of 18 m/s. How much time passes before the ball strikes the ground? Disregard air resistance.

Which unit do astronomers use for angular measurement? A. parallax B. arcsecond C. parsec D. light-year

In 2013, renewable energy provided 10% of the total energy used in the united states, and wind energy accounted for 17.4% of the renewable energy used. what percent of the total energy used in the united states in 2011was wind energy?

Because of which of the following can you see different colors?

If a car goes at a speed of 80 kph in 10 seconds, what is the distance

An unknown material has a mass of 5.61 kg, and its temperature increases by 0.124°C when 1320 J of heat are added. What is the specific heat of the material? (Unit = J / (kg*C))

What is it called when your tv goes fuzzy?