A metal radiator's temperature falls from 90 degrees Celsius to 40 degrees Celsius. What has happened to the thermal energy contained by the radiator?

A.

It has increased.

B.

It has remained constant.

C.

It has decreased.

D.

It has been destroyed.

In which of the following conditions would there be the most resistance? -a warm wire -a wide wire -a short wire -a cool wire

What property makes copper easier to shape than stone? It is hard. It is strong. It is tough. It is malleable.

Which of the following statement (s) about energy and phase is/are correct? Select all that apply. Choose one or more: A. While only one phase is present, adding or removing energy changes PE but not KE. B.

Identify two factors you must know to describe the motion of an object along a straight line

Which of the following is true about free energy? A. It is all the energy that a molecule contains B. The free energy change of a reaction is dependent on the reaction path C. The free energy change of a reaction is dependent on the enzyme D.

What are starburst galaxies and what do they have to do with galaxy evolution?

Six light bulbs are connected in series with a 9.0 volt battery. What is the voltage across each bulb?

Can an object travel at the speed of light? Why or why not?

It's a hot and sunny day and you decide to go for a drive. When you open your car door, it's a lot hotter than outside. Why is that

Which compound is composed of oppositely charged ions