if you have to apply 40 N of force on a crowbar to lift a rock that weighs 400 N, what is the actual mechanical advantage of the crowbar?

A 200-kg boulder has 39,200 joules of gravitational potential energy. What height is it at?

The resultant of two vectors is maximum, when angle between them is:

What device stores charge on two parallel metal sheets? A. A resistor B. A battery C. A capacitor D. A wire

Suppose a plane accelerates from rest for 32.3, achieving a takeoff speed of 47.1 m/s after traveling a distance of 607 m down the runway. A smaller plane with the same acceleration has a takeoff speed of 28.2 m/s.

What is the bending of light when it changes media called?

By what factor would your weight be multiplied if the earth were1/2 as massavise and the diameter was unchanged

Why does it seem harder to start sliding a couch across a carpeted floor than it oes to keep it moving?

Energy due to the motion of an object is called

What is a thick cuticle layer in drought conditions?

All atoms of an element have the same?