Two friends were arguing about energy from the Sun. They each had a different idea about using the Sun's energy. Here is what they said:
Violet: The Sun's energy is only useful when the Sun is shining. When there is
no sunlight, you can't use the Sun's energy.
Liam: The Sun's energy can be captured and used later. The Sun does not
have to be shining in order to use the Sun's energy.
Who do you agree with the most?
Explain why you agree.

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a.m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?

True or false graphs must include scales that increase by the same amount

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90