A piece of copper with a mass of 218 g has a heat capacity of 83. 9 j/°c. What is the specific heat of copper?.

Two technicians are discussing how to test a car's exhaust by holding a small piece of paper within an inch of the tailpipe mouth. technician a says that if the paper is vibrating due to a "puffing" output from the tailpipe, this signals a smoothly running engine. technician b says that if the paper is being drawn toward the tailpipe, this could indicate burned exhaust valves. who is correct? a. technician b b. both technicians a and b c. technician a d. neither technicians a or b

Explain how earth is like a giant bar magnet. how is our magnetic field made?

Which of the following is a characteristic of the coverdell education savings account