What are fossil fuels and are there alternatives to using fossil fuels to get the power we need?

What are energy levels

What is the ratio of the sun's gravitational force on you to the earth's gravitational force on you? fsunfearth = ?

Which of the following will attract one another? A. The north pole of magnet and the south pole of another magnet B. The north pole of a magnet and the north pole of another magnet C. The south pole of a magnet and the south pole of another magnet D.

An object is dropped from the top of a 200 m tower. its height above the ground after t seconds is 200 - 4.9t^2. how fast falling after 3 seconds

An object's inertia causes it to come to a rest position. True or false

Which piece of playground equipment could be used to model and explain the movement of matter in the biosphere

A 4-kg ball has a momentum of 12 kg∙m/s. what is the ball's speed?

Two objects, one of mass m and the other of mass 2m, are dropped from the top of a building. when they hit the ground

What element is the basis for all living things and can combine with other elements in many ways?

What would we need to know to calculate both work and power? energy, force, and time force, distance, and time force, mass, and distance mass, force, and energy