Is the density of an object constant?

After a flood, people should guard against A) many days of bright sunshine. B) a period of prolonged drought. C) the chance of water-borne diseases. D) a sudden drop in groundwater levels.

A 40kg rock is perched atop a cliff that is 50 m high. What is it's potential energy?

Technician A says that the tinnerman nuts are used to hold the brake drum on and should be reinstalled when the drum is replaced.

What does it mean when the mark on the ramrod disappears into the barrel of the muzzleloader?

4.2 mol of monatomic gas A interacts with 3.2 mol of monatomic gas B. Gas A initially has 9500 J of thermal energy, but in the process of coming to thermal equilibrium it transfers 600 J of heat energy to gas B.

If you are going 30 miles an hour in good condition, it will take how many feet to stop.

Name of group to which hydrogen belongs to

Which would increase the reaction rate? Check all that apply. A. Raising the temperature B. Stirring the reaction C. Raising the activation energy D. Adding a catalyst

How much of the electrical energy transformed by a common light bulb becomes heat energy?

What is the current for a 1200W microwave connected to 110V outlet.