This should be correct

A copper ball and an aluminum ball of mass 150 g each are heated to 100°C and then cooled to a temperature of 20°C. The heat lost by the copper ball is 4.6 kJ. The heat lost by the aluminum ball is 10.8 kJ.

A 35kg child moves with uniform circular motion while riding a horse on a carousel. The horse is 3.2m from the carousel's axis of rotation and has a tangential speed of 2.6 m/s. What is the child's centripetal acceleration?

If energy decreases in one part of a system, what will happen? a. energy will be created in the system. b. energy will be destroyed in the system. c. energy will increase in another part of the same system. d.

If you were a pastor, and you were getting married, would you hire a pastor, or would you do the wedding yourself?

Which planet is an inner planet, and which one is an outer planet? Explain your answer. (this is a essay question and you have to type a answer)

How does respiration differ from breathing

Before radiant energy can be converted to thermal energy, it must be changed to what

My science fair project is: Texting Versus Talking - Effects of Cell Phones on Reaction time. What should I research?

How does the brightness of a bulb tell you about the energy of electrons passing through it?

Why do you think sound travels faster in steel than it does in wood? (Hint: Think about the densities of the two materials, and how the particles might be arranged.)