A toy train is traveling along a circular track

at a constant speed of 1.0 m/s. The acceleration of the train is found to be 4.0 m/s2

.

What is the radius of the track?

If you made a string instrument, how would a wider diameter of the string influence the sound?

What do we mean by the orbital energy of an orbiting object (such as a planet, moon, or satellite) ?

A particular frost-free refrigerator uses about 710kWh of electrical energy per year. Express this amount of energy in J, kJ, & Cal.

How many significant figures can come from 12.68

The thermal energy in a heat engine is used to move a piston. Which best describes why this is possible? A. The increase in thermal energy results in an increase in pressure B. The decrease in thermal energy results in an increase in pressure. C.

How much work is done when a 4.0-newton box is carried horizontally a distance of 2.0 meters at a constant velocity?

You push a shopping cart filled with groceries (total mass = 20 kg) by applying a force to the cart 30° from the horizontal. If the force you apply has a magnitude of 86 N, what is the cart's acceleration? Assume negligible friction.

Does water expand more as the temperature drops even more below 0 deg? I am worried about the coolant in my rad. as the temp. is 40deg below.

A 1.00-kilogram ball is dropped from the top of a building. just before striking the ground, the ball's speed is 12.0 meters per second.

Why oil does not dissolve in water?