A perpetual motion machine can never be bill because it is not possible to eliminate

a. momentum

b. inertia

c. elasticity

d. friction

The work-energy theorem states that the work done on an object is equal to a change in which quantity? kinetic energy displacement potential energy mass

Mo Farah won the 10,000 meter race in the 2012 Olympics with an official time of 27 minutes, 30.42 s. To the correct number of significant figures, what was Farah's average speed in m/sec?

A racing car's velocity is increased from 44 m/s to 66 m/s in 11 seconds. What is the acceleration? and what is the displacement?

Boyle's Law states that when a sample of gas is compressed at a constant temperature, the pressure P P and volume V V satisfy the equation P V = C PV=C, where C C is a constant.

Which of these is a compound? A: O B: CO2 C: O2 D: Co

What is a radio interferometer? a device for correcting chromatic aberration in radio telescopes a device for absorbing and transmitting radio waves a network of several radio telescopes wired together a radio communication network joining several

In which galaxy is our solar system located? a. milky way b. ngc 4414 c. andromeda d. small magellanic cloud

Two astronauts, of masses 60 kg and 80 kg, are initially right next to each other and at rest in outer space. They suddenly push each other apart. How far has the heavier astronaut moved when the lighter astronaut has moved 12 m

A person suffering from anaemia gets tired

Jessica took a Mylar balloon outside on a very hot day. As she waited for the bus the balloon began to get bigger. What is the best explanation of this?