A gas in a piston is compressed doing - 439 j of work, and its internal energy increases by 318 j. how much heat flows? (be careful with + and -. + w = expansion. + q = added, + u = temp goes up)

(unit = j)

13. Scientists can work in which of the following. Select all that apply. Universities Government Business and industry Medical Institutes

Two technicians are discussing automatic transmission transaxles. technician a says that it is normal for a vehicle to move slightly when the gear selector is in the drive position with the brakes released.

Which is the safest place to be during a thunderstorm? A[A playground] B[A field] C[A tree] D[A car]

The angles between two forces is 30 degrees. One 220 N force is on the x axis and another is 150 N. Find the direction and magnitude of the resultant of the forces. axis

3. An astronaut on a space-walk swings a 0.5 kg metal tool in a circular path at the end of a cable 3.6 m long. The astronaut then reels in the tool to a 1.2 m distance.

A horizontal piston-cylinder compresses adiabatically 1 mol of propane gas, initially at 350 K, from 0.04 to 0.01 m3.

One problem for humans living in outer space is that they are apparently weightless. One way around this problem is to design a space station that spins about its center at a constant rate.

Three asteroids have exactly the same amount of mass. The distance from asteroid A to asteroid B is 300 km, the distance from asteroid B to C is 400 km, and the distance from C to A is 100 km.

what determines the quality of a conductor

If the mass of an object increases, predict what will happen to the coefficient of sliding friction.