Why is earth reffered to as the blue planet

If the mass of a material is 41 grams and the volume of the material is 5 cm^3, what would the density of the material be? answer: Units:

If a force does not act parallel to the resulting displacement, what is the effect on the work done by the force?

At 1 kilometer per year, how many centuries would it take for people to move from africa to china which is 10,000 kilometers away-

what is the mass of a basketball that has a kinetic energy of 100 and is traveling at 5 meters per second

How is an electromagnet different from a bar magnet? A) Bar magnets have a north and south pole, but electromagnets do not. Eliminate B) Electromagnets are strong, permanent magnets, but bar magnets are always weaker.

What is the fundamental unit for measuring mass in the metric system?

Why are some craters on the moon bigger than others

What object oriented feature can we use to have a single test program, with one set of method calls in which the user can decide which bag implementation (array - or link-based) needs testing?

What might motivate someone to study forensics

A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to five times her weight as she goes through the dip. If r = 17.