A star with a surface temperature of 3,000 K is A
brighter in the green wavelengths and dimmer in the blue and red wavelengths.
dimmer in the blue wavelengths and brighter in the red wavelengths.
the same brightness at all visable
brighter in the blue wavelengths and dimmer in the red wavelengths

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.