15. For waves moving at a constant speed, if the wavelength is doubled, the frequency is

doubled

halved

unchanged

quadrupled

A ball is thrown straight up from the edge of the roof of a building. A second ball is dropped from the roof a time of 1.19s later. You may ignore air resistance.

Which is the most accurate description of how the coolant works in an engine? Coolant absorbs thermal energy. Combustion absorbs thermal energy. Coolant absorbs chemical energy. Combustion absorbs chemical energy.

what is the gravitational potential energy of a clock that had a mass of 4 kg and is positioned 1.5 m off the ground

What is the mass of an object that needs a force of 6000 newtons to increase its speed from rest to 107 m/s in 2.3 seconds?

Part a determine the object's velocity at times t=0 s, 2 s, 4 s, 6 s, and 8 s. express your answer using two significant figures.

If a pressure gauge measure an increase in 3*10^ (5) Pa on an area of 0.7 m^2, calculate the increase in the force applied to the area?

Which of the following is an example of potential rather than kinetic energy? a. water rushing over Niagara Falls b. a molecule of glucose c. a crawling beetle foraging for food d. light flashes emitted by a firefly

If a force of 15 newtons [N] is applied to a surface and the pressure is measured as 4,000 pascals [Pa], what is the area of the surface in units of square milimeters [mm2 ]?

An engineer has the task of producing an aluminum alloy with a density of 3.0 grams per cubic centimeter. She comes up with the perfect alloy and saves a sample of it. Which mass and volume measurements correspond to this sample? 7 g and 2.

What must be your car's average speed in order to travel 235km in 3.25 hours?