A roller coaster train with a mass of 500 kg stops at the top of a hill. If the hill is 110 m high, what is the potential energy of the train? 4,900 J 5,612 J 55,000 J 539,000 J

Calculate the number of joules of kinetic energy of a 9-kg dog running at a speed of 6 m/s.

According to the graph, what is the maximum age at which a 4000 Hz sound wave with an intensity of 20 dB would be heard? 55 60 65 70

If the beam is made from wood having an allowable shear stress τallow = 390 psi, determine the maximum magnitude of p. set d = 4 in.

Why does a car move forward while traveling on a road, even though its wheels are equipped to spin backwards? a. The force of the road is greater than the force of the tires c. The force of the tires overcomes the force of the road b.

After an average acceleration of 3.47 m/s 2 during 2.85 s, a car reaches a velocity of 14.5 m/s. Find the car's initial velocity.

To stretch a certain nonlinear spring by an amount x requires a force F given by F = 40 x - 6 x 2, where F is in Newtons and x is in meters.

A wave passes through an opening in a barrier. The amount of diffraction experienced by the wave depends on the size of the opening and the wave's (1) amplitude (3) velocity (2) wavelength (4) phase

Balanced - Forces acting on an object are balanced if the ... If forced on an object are balanced then the object cannot be ...

How are magnetic stripes near mid-ocean ridges evidence for sea-floor spreading?

If a truck has a mass of 2 x 106 grams and a velocity of 35m/s, what is its momentum? kgm/s a. 2 million b. 70 c. 57.14 d. 70,000 e. 57,100