Richard rides a bike on a road sloping downward and inclined at an angle of 30° with the horizontal. if he moves at a constant speed of 10 meters/second, calculate his vertical downward velocity.

In a closed system, the total energy prior to an energy transformation is the total energy after. a. equal to b. unrelated to c. greater than d. less than

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation