A rock is dropped from the top of a 500m cliff. How long does it take the rock to reach the bottom

A subway train accelerates from rest at one station at a rate of 1.30 m/s^2 for half of the distance to the next station, then decelerates at this same rate for the second half of the distance.

Iron can rust when it is exposed to oxygen. What method could be used to prevent iron from rusting?

What is the SI unit of current

Friction removes energy from objects in motion. Which statement best describes how this works? a) friction transforms KE into thermal energy b) friction transfers thermal energy to KE c) friction transforms TE into PE d) friction transforms PE into

What is. 145kg * 9.8m/s2

Photons travel outward from a light bulb in

The critical angle for a beam of light passing from water into air is 48.8°. this means that all light rays with an angle of incidence in the water that is greater than 48.8° will be

A basketball is filled with air and has a small hole. Explain why the basketball would leak.

Aligned magnetic domains are only present in which of the following? A) permanent magnets B) temporary magnets C) all magnetic material D) depends on the situation

How are magnetic poles and electrical charges similar