Which substance requires the most heat to melt 1 kg of the substance? A. Copper B. Mercury C. Gold D. Helium

4. How far does a car travel in 90 seconds if it is traveling at a speed of 55 m/s?

If a car is traveling at the speed of light and the car turns on the headlight, what would happen? Would the headlight not turn on at all, would the headlight travel at twice the speed of light, or would the headlight act like a flowing sink flowing

If the energy carried by a wave increases, which other wave property also increases? A) amplitude B) medium C) wavelenght D) wave speed

A child dangles a 1.50-kilogram stuffed toy 0.500 meters from the ground. What is the potential energy of the toy? Answers are: 0.188 J 0.750 J 7.35 J 14.7 J

Molecules move from areas of low concentration to high concentration through a process of

Creates clouds, snow, sleet, rain and hail

Which type of radiation consists of a fast stream of negatively charged particles? a. alpha particles b. beta particles c. gamma rays d. positron particles

Range of motion is the distance an object can travel when separated from another object. T/F

If 500 thousand btus of energy are available to raise the temperature of a water boiler from 20°f to 100°f, how many gallons of water can be added to the boiler?

A woman pushes a 27 kg lawnmower at a steady speed. She exerts a 180 N force in a direction 31 degrees below the horizontal. The acceleration of gravity is 9.8 m/^2 Find the magnitude of the vertical force this lawnmower exerts on the lawn.