Which refers to the ratio of output force to input force of a machine?

mechanical advantage

average strength

total power

energy requireme

Imagine that you are driving up a mountain on a very curvy road at night when the air is very still and not moving. The air temperature is getting colder and colder as you drive up the mountain.

What is the average velocity of the person taking this walk? A) 0m/h B) 15m/h one way and 15m/h the other way C) 30m/h D) 30m/h north and 30m/h south

What type of wave carry sound energy forward?

Once the magnet moved closest to the loop in the forward direction, under normal magnet polarity, the approximate magnitude of the induced current shown on the galvanometer was mA.

Did the bigbang violate the law of conservation of energy and matter?

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 ...