A wooden box weighing 150 N is sliding at a constant rate over a concrete sidewalk. The force required to pull the box at a steady rate is 78 N. What is the coefficient of friction?

1.9

228

72

0.52

Which term refers to the process by which land is worn way by natural forces or human acticity?

Teams A and B are in a tug-of-war challenge. Team A wins the challenge. What can be said about Team A? A. The net force was in their direction. B. They exerted a net force of zero. C. The net force was opposite their direction. D.

What are some objects in your home that demonstrate electrical energy to radiant energy to thermal energy

A particle with a charge of + 4.20 nC is in a uniform electric field E⃗ directed to the negative x direction. It is released from rest, and after it has moved 8.00 cm, its kinetic energy is found to be 1.50*10-6 J. A.

It took 500-newton ballerina a force of 250 joules to lift herself upward through the air. How high did she jump?

While playing with her 5 year old cousin, a Physics 135 student pushed him forward on his scooter. She pushes with a force of 50 Newtons for 3.5 seconds. If the boy and the scooter together have a mass of 30 kg, what is their final velocity? a. 2.

3. A 120.0 V generator supplies 3.0 kw of power. How much current ca the generator deliver?

An apple drops from a tree and hits the ground in 1.5s what is its speed just before it hits the ground?

Sound travels slow in cold air. Why does the speed of sound depend on air temperature?

A tow truck pulls a 500 kg car so that the car accelerates 2 m/s2. What is the net force on the car? 250 N 498 N 1000 N 502 N