Why do some devices use batteries and other devices use a wall outlet for power?

The ability of a material to transfer heat or electric current is called A. conductivity. B. insulation. C. porosity. D. convection.

Why do clouds sometimes disappear as they cross-mountains

Give two disadvantage of hydroelectric power

A diesel engine a. uses only air during the intake stroke. b. is an external-combustion engine. c. uses a spark plug to ignite fuel. d. uses Freon.

A rectangular certificate has a perimeter of 32 inches. Its area is 63 square inches. What are the dimensions of the certificate?

Since all stars begin their lives with the same basic composition, what characteristic most determines how they will differ? 1. location where they are formed 2. time they are formed 3. luminosity they are formed with 4. mass they are formed with 5.

What primarily involves heat transfer by convection?

Each of the following lists two facts. which pair can be used with newton's version of kepler's third law to determine the mass of the sun? each of the following lists two facts.

Which is the temperature at which a solid changes into a liquid?

What is the formula for velocity?