What are scientist who study motion forces and energy to explain?

Write the equation of a parabolic cross section mirror used to concentrate sunlight on a straight pipe surrounding the focus of the mirror which is 9 inches from the vertex of the mirror? What is the function of ultrasonic? An object between F and C? What is gold's period? How many hundredths of a second are in a second? What makes an object move that way they do? What is the force that keeps an object moving on a curved path that is directed inward toward the center of rotation? What is the volume coefficient of expansion for ice? What is collision frequency? Is fast as the wind a metaphor? Can opaque substances refract light? Why is gravitational force in the necleus so small? What type of fastener is used to join two electrical conductors? What happens when the light is directed at a transparent material? Why does 100g of coconut have more energy stored than equal mass of dried potato? Is a crowbar considered a pully? Who was important in the discovery of radiation? What is the distance and direction from a reference point? What is the force that opposes the effort force called? What is the apparent weight of the floating block when a block of wood is floating in a lake?

What are scientist who study motion forces and energy to explain?