Why do some devices use batteries and other devices use a wall outlet for power?

A turntable is spinning on a frictionless axle when a ball of putty is dropped onto it from above. The putty sticks to the turntable when it lands. Is angular momentum conserved for the turntable and putty (the system) during this process?

Why is kinetic friction less than limiting friction?

Which describes the attraction or repulsion caused by magnets? a. magnetic domain b. magnetic force c. magnetic field

When a carpet is beaten with a stick dust comes out of it ... why

Anorexia is a type of eating disorder that usually begins in young people a. with obese parents b. around the onset of puberty c. around the time they graduate high school d. who watch too much tv

It always takes to change the motion of an object. O A. electricity OB. energy C. gravity D. density Reset

What might a psychodynamic theorist think about a person with extreme shyness?

Determine the magnitude of the acceleration for the speeding up phase.

A battery is used to?

A person riding on the roof of a freight train throws a ball forward. (a) If we ignore air drag and relative to the ground, is the ball moving faster or slower when the train is moving than when it is standing still?