How many neutrons does element X have if its atomic number is 24 and its mass number is 99?

The energy efficiency of a car is approximately 20%. If you put 10 gallons of gas into the car, how many gallons are "wasted"?

What are the results from a stream leaving a mountain range and flowing into a lowland. select all that apply?

Sunlight can raise the inside temperature of a real doghouse. Which of the following changes to a real doghouse would result in warmer inside temperatures due to sunlight?

Craig is modeling the discovery of electromagnetism. Which procedure should he use? moving a magnet into a coil of wire in a closed circuit moving a magnet into a coil of wire in an open circuit bringing a compass near a wire that has no electric

Hermal energy is a form of ... A. Potential energy. B. Kinetic energy. C. Chemical energy.

two objects are in uniform circular motion at the same speed but at different radii. the ones with the __ radius has the largest centripetal acceleration.

What about a rubber band, can it change its shape? Is it a solid?

Which two subatomic particles have approximately the same mass

A blank tells you what the different symbols and lines represent on a map

How well would a piece of hot metal heat the cool water?