A 142 kg boulder is located near the edge of a cliff 25 m above the ground. What is the gravitational potential energy of the boulder

How far from the bottom of the chute does the ball land? your answer for the distance the ball travels from the end of the chute should contain r?

Which statement or observation would not be supported by the two circuits? A) The current in the circuit A would be less. B) The light bulbs in the circuit B would be brighter. C) The light bulbs in circuit B are equal in brightness.

Starting from rest, a DVD steadily acceleration to 580 rpm in 1.0 s, rotates at this angular speed for 3.0 s, then steadily decelerates to a halt in 2.0 s. How many revolutions does it make?

The massless spring of a spring gun has a force constant k=12~/text{N/cm}k=12 N/cm. When the gun is aimed vertically, a 15-g projectile is shot to a height of 5.0 m above the end of the expanded spring. (See below.

Should your directions to a friend for traveling from one city to another include displacements or distances? Explain

Can a simple machine's efficiency ever be greater than 100%? Explain your answer.

A fishbowl has a circular opening with a diameter of 13 cm. The fishbowl sits upright on a table in a magnetic field of 0.00110 T that is directed downward. What is the flux through the glass of the bowl? -1.5*10^-5 Wb -4.5*10^-4 Wb 0.0 Wb -5.

Why do cars need a cooling system in conjunction with the engine

A runner starts from rest and has an acceleration of 3 m/s2. How fast is she running after 1.1 seconds

Which best blocks X-ray particles and can therefore be observed more closely through the use of this technology?