You run 100 meters at a speed of 5m/s and then walk 100 meters at a speed of 1m/s. Find the average speed?

Why is electricity dead buy solar panels fundamentally different from converting thermal energy into electricity? (Bet you can't get this one)

A helicopter hovers 200.0 meters over the ground and releases a relief packet. How much time does it take for the food packet to reach the ground?

A ball is thrown 24 m/s into the air. How high does it go?

A machine had a mechanical advantage of 4.5 what force is out out by the machine if the force applied to the machine is 800n A. 0.006n B. 180n C. 805n D. 3600n

The total energy of a system remains blank

One of the driving forces of plate motion is: A. volcanic eruptions along coastlines B. meteor impacts in the ocean basins C. convection currents in the mantle D. hot liquid magma in the inner core

Which element is required for the combustion of fossil fuels? nitrogen hydrogen oxygen carbon

When air pressure is lower what happens to a balloon filled with air

Determine the power input for a motor necessary to lift 300 lb at a constant rate of 7 ft/s. the efficiency of the motor is ϵ = 0.65.

The thermal contact resistance at the interface of two 1-cm thick copper plates is measured to be 0.000056 m2K/W.