Doubling the amplitude of a wave causes its energy to.

A. triple

B. quadruple

c. drop by half

D. double

A rock is sliding down a hill. Assume that the hill is 20 meters high and the rock has a mass of 1,000 kilograms.

Why do we always only see one side of the moon? A. From Time to time we see all the sides of the moon from the Earth. B. The far (opposite) side only faces the Earth during the daytime when the Sun's light outshines the Moon. C.

A hot air ballon was a mass of 400 kilograms moves across the sky with 3200 joules of kinetic energy. the velocity of the balloon is

Viruses multiply by: A) Reproducing themselves B) Dividing C) Altering the cell they occupy D) Budding

Which parts of a torch are conductors and insulators

Bob, Jill, Kim, and Steve measure an object's length, density, mass, and brightness, respectively. Which student must derive a unit of measurement? A. Bob B. Jill C. Kim D. Steve

Scientist have changed the model of the atom. what experimental evidence led them to change from the previous model.

A 20 kg mass with an initial velocity of 10 m/s slides to a stop in 2 meters. What is the net work down on the mass? a.) 250 J b.) 500 J c.) 120 J d.) 20 J e.) None of the above

When traveling in a car and turning it the right which way does your body go and why

A sample of helium gas has a volume of 900. milliliters and a pressure of 2.50 atm at 298 K. What is the new pressure when the temperature is changed to 336 K and the volume is decreased to 450. milliliters?