What is the part of an electromagnetic spectrum that human eyes detect?

A wind turbine takes in energy from wind with the goal of converting it into electrical energy. Much of the wind energy is also converted into the kinetic energy of the spinning turbine and heat lost to the air around it.

A sphere of mass 0.5kg is dropped into a column of oil. At the instant the sphere becomes completely submerged in the oil, the sphere is moving downward at 8m/s, the buoyancy force on the sphere is 4.0N, and the fluid frictional force is 4.0N.

When we look into the band of light in our sky that we call the Milky Way, can we see distant galaxies? Why or why not?

17. If you looked at a light through the lenses from two polarizing sunglasses that were overlapped at right angles to each other, all of the light would pass through. most of the light would pass through. little of the light would pass through.

A marble with a mass of 1.5 grams rolls at a constant rate of 0.50 cm/s across a table. What is the magnitude of the marbles momentum?

A personal computer uses a number of chips mounted on a circuit board called?

If all organisms have DNA (same 'stuff') how come all organisms look different?

How much voltage can be stored in a thundercloud?

What is work done in physics and how can it be calculated

What is first and second conditions of equilibrium?