Which of the following is the cause of the change of seasons? A) the distance of a place from the Equator B) prevailing winds blowing across land or water C) the tilt of the Earth's axis D) the rotation of the Earth

What is the refraction index of a medium? -the ratio of the velocity of light in the medium over the velocity of light in a vaccum -the ratio of the velocity of light ina vacuum over a velocity of light in the medium -the ratio of the angle of

Why non-metals aren't good at conducting electricity?

Feng and Isaac are riding on a merry-go - round. Feng rides on a horse at the outer rim of the circular platform, twice as far from the center of the circular platform as Isaac, who rides on an inner horse.

Which of the following describes the importance of cyanobacteria to early Earth atmosphere formation? A.) Cyanobacteria released oxygen into the air, creating a protective ozone layer B.

All exciting matter and space are referred to as the (?) whats the missing word

Based on how the book describes a heat pump in sec 16.3 how does a heat pump prove law of conservation of energy

When a gas in a container is squeezed to half its volume, its density?

A ballet student with her arms and a leg extended spins with an initial rotational speed of 0.90rev/s. As she draws her arms and leg in toward her body, her rotational inertia becomes 0.80 kg⋅m2 and her rotational velocity is 4.1rev/s.

The power rating of a vacuum cleaner is 0.8 kilowatts. If you use the vacuum cleaner for 2.5 hours, how much energy does it use?

Which has more gravitational potential energy - - a cliff diver at the top of the cliff or a cliff diver at the bottom of the cliff?