If the efficiency of a lever is 30% and 560 J is used to move the lever, what is the work output?

A) 18.7J

B) 168 J

C) 1,867 J

D) 16,800 J

Force = mass times acceleration

A 5.0-m long, 12-kg uniform ladder rests against a smooth vertical wall with the bottom of the ladder 3.0 m from the wall. the coefficient of static friction between the floor and the ladder is 0.28.

Why do you think it might be useful to know the distance between a gun fired and it's target?

The continuous flow of charges through a material is called electric resistance. true or false

What do behaviorism and cognitive psychology have in common? O Both rely on the scientific method. Both attempt to explain human behavior. Both note the differences between human and animal behavior Behaviorism focuses on actions only.

If you lift a five pound object 18 inches how many joules of energy did yo use?

A temperature of 20°C is equal to °F.

Technician A says that when a fuse has popped, it just needs to be replaced, since it performed its job. Technician B says that when a fuse has blown, the circuit needs to be diagnosed because the fuse was probably not the problem. Who is correct? A.

A car starts from rest and moves around a circular track of radius 37.0 m. Its speed increases at the constant rate of 0.440 m/s2. (a) What is the magnitude of its net linear acceleration 18.

A dog walks Along the ground. If the dog applies an action force on the ground, what is the reaction force?