Wich of the following is a contact force?

a. - friction

b.-magnetism

c.-gravity

d.-electricity

Convert the following degree celsius tempture to degree fahrenheit a. 40c b. 30c

Which pair of variables defines motion?

A charge of 8.5 * 10-6 C is in an electric field that has a strength of 3.2 * 105 N/C. What is the electric force acting on the charge?

Your friend is asked to differentiate between evaporation and boiling. what questions could you ask to make him to know the difference between evaporation and boiling? physics question.

Two balls have a race over a distance of 20.0 meters. The red ball travels at a constant velocity while the blue ball starts at rest and has a constant acceleration. For this problem set the blue ball's acceleration to be 3.30 m/s2.

Sally turns on her cellular telephone to speak to her friend who is located thousands of miles away. Which of the following best describes how such a telephone is able to transmit and receive information? A.

Calculate the gravitational potential energy relative to the ground when an 82 kg person climbs to the top of a 2.0 m stepladder.

A rock is thrown from a cliff and hits the ground five seconds later at a distance of 50 m from the cliff how high was a cliff

A 15.0 m long plane is inclined at 30.0 degrees. If the coefficient of friction is 0.426, what force is required to move a 40.0 kg mass from rest at the bottom on the plane to the top of the plane with a final velocity of 8.00 m/s?

In a pig-calling contest, a caller produces a sound with an intensity level of 60 db. how many such callers would be required to reach the pain level of 120 db? 2 incorrect: your answer is incorrect.