Two forces are applied to a wheel with a radius of 1 m. The 50 N force is perpendicular to the wheel and paints up. The 20 N force is perpendicular to the wheel and points down. What is the torque on the wheel? A: 30 N m
B: 70 N m
C: -30 N m
D: -70 N m

An air-standard stirling cycle operates with a maximum pressure of 600 psia and a minimum pressure of 10 psia. the maximum volume of the air is 10 times the minimum volume. the temperature during the heat rejection process is 100°f. calculate the specific heat added to and rejected by this cycle, as well as the net specific work produced by the cycle. use constant specific heats at room temperature. the properties of air at room temperature are r

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

What was the first instrument to ever record an earthquake?