Does it take more energy to boil a gram of mercury or a gram of water?

If you pour 100 grams of water from an 8 ounce can into a 16 ounce glass, by what amount does the density of the fluid change? ... ?

Speed is calculated by taking ___ divided by time.

Which of the following is an element? A. Water B. Carbon Dioxide C. Oxygen D. Ammonia

The most common salt in ocean water is calcium surface. True or False

Which is the goal of science? A. to develop new technology B. to test hypotheses C. to expand knowledge D. to apply information

What is the momentum of a 2 kg ball traveling at 2m/s

A constant force is exerted for a short distance on a block of mass that is initially at rest on a horizontal frictionless plane. This force gives the block a certain final speed v.

A football quarterback is moving straight backward at a speed of 3.00 m/s when he throws a pass to a player 20.0 m straight downfield. (a) if the ball is thrown at an angle of 25.

Simone is walking her dog on a leash. The dog is pulling with force of 34 N to the right and simone is pulling backward with a force of 16 N

An object moves with velocity v (t) = t^2-8t+7 a) write a polynomial expression for the position of the particle at any time t greater or equal to zero.