About what fraction of the earth's atmosphere is not made of nitrogen.

2. Determine the current in a 120-watt bulb plugged into a 120-volt outlet.

If a train and a car are traveling at the same speed, they have the same amount of kinetic energy.

The worlds fastest humans can reach speeds of about 11 m/s in order to increase his gravitational potential energy by an amount equal to his Kinetic energy at full speed how high with the sprinter need to climb

An astronaut walking outside a space station can be seen, but not heard. The only way to communicate is through radio transmissions. what type of wave is this? how do you know?

A pendulum takes 6.0 seconds to swing through 5 complete cycles. What is the period of the pendulum?

A (n) ___ forms where light seems to come from.

How many units measure one wavelength? a 16 b 8 c 2 d 4

Convert 52.3 weeks into days 367.5 days 366.1 days 450 days

4 what is the difference between an array's size declarator and a subscript?

A bowling ball has a mass of 6 kilograms. A tennis has a mass of 0.06 kilogram. How much inertia does the bowling ball have compared to the tennis ball?