Ancient physicists tried to determine the orbits of the planets. Every night they carefully tracked the location of the planets and stars they observed. What kind of investigation were these physicists conducting?

What is (9x10^9) (2.6x10^-6) (1.4x10^-6) / 36

What is a wavelength? a. the highest part of the wave b. the distance between two wave troughs c. the speed of energy of the wave d. the lowest part of the wave

In certain martial arts, people practice breaking a piece of wood with the side of their bare hand. Use your understanding of impulse to explain how this can be done without injury to the hand.

Example of an unbalenced force

Which mechanical waves needs a medium to travel through? Transverse and longitudinal waves only Longitudinal and surface waves only At mechanical waves need a medium to travel through Surface waves only

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.