A 64 kg student travels from the first floor to the fourth floor of a school (a height of 15 m).What
total work did she do climbing the stairs?
How long would this trip last if the student
produced 240 W of power?

Shelly experiences a backward jolt when the driver starts the school bus. which of the following explains this phenomenon? a. the inertia of shelly b. the inertia of the bus c. the normal force of the seats on shelly d. the net force acting on shelly in a backward direction e. a zero net force acting on shelly

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?