An automobile use a 75,000 J of chemical energy from Gosselin produce 10,000 J of useful output energy

A. calculator it's efficiency

B. where does the lost energy go, that part of the input work that doesn't become useful work?

he universal law of gravity states that all objects attract all other objects. Why is this considered a universal law? A. Gravity is a principle that is in effect at all times. B. The universe has many objects in it that have gravity. C.

A football player initially at rest accelerates uniformly as she runs down the field, travelling 17m (E) in 3.8s. What is her final velocity?

A ray of yellow light (f = 5.09 * 10^14 Hz) travels at a speed of 2.04 * 10^8 meters per second in (1) ethyl alcohol (3) Lucite (2) water (4) glycerol

Which of the following accurately describes junction diodes? A. The negative terminal of the source of voltage is connected to the N-type material within a reverse-biased setup. B.

The model of the atom proposed by Greek philosophers appears similar to the model proposed centuries later by Dalton. What was the key difference between the two models?

8. A gas is contained in a horizontal piston-cylinder apparatus at a pressure of 350 kPa and a volume of 0.02 m3. Determine the work done by the piston on the gas if the cylinder volume is increased to 0.15 m3 through heating.

A 75.0 kg person stands on a scale in an elevator. (a) What does the scale read (in N and in kg) when the elevator is at rest?

The hinge at A and cable BDC support beam ABC. Cable BDC passes over the pulley D that is pinned to the ceiling. (Assume that the + x-axis is to the right and the + y-axis is up along the page.

The "zone of avoidance" a) Accounts for the absence of any planet between the orbits of Mars and Jupiter Prevents collisions between planets in the Solar System.

Electric current is ...