Jenny is sitting on a sled on the side of a hill inclined at 15°. What force is required to keep the sled from sliding down the

hill if the combined weight of Jenny and the sled is 90 pounds?

How does the force of gravity affects an objects acceleration

When the computer you are working on uses energy it also produces waste energy. What type of energy is this waste energy?

A heating element has a resistance of 180 Ω and draws a current of 1.60 A. What is its power?

Professional application dr. john paul stapp was u. s. air force officer who studied the effects of extreme deceleration on the human body.

Which of the following would be a good question that could be scientifically investigated? A. What is the correct way to pursue happiness in life? B. Can play the piano at a shower tempo improve the sound quality? C.

Consider the following controls in an automobile in motion : gas pedal, brake, steering wheel. what are the controls in this list that cause an acceleration of the car?

What material are oil pipelines made from?

3/129 A 175-lb pole vaulter carrying a uniform 16-ft, 10-lb pole approaches the jump with a velocity v and manages to barely clear the bar set at a height of 18 ft. As he clears the bar, his velocity and that of the pole are essentially zero.

A few years ago, Serena Williams dived to hit a tennis ball right after it bounced off the ground. The ball bounced on the ground 10.3 m from the net, and after Serena hit the ball it flew over the 0.

A force of 1.25x103N is required to lift an object that is under the influence of an acceleration due to gravity of 7.86ft/sec2. What is the object's mass in kilograms?