Which era is where dinosaurs came

How much kinetic energy is in a runner weighing 83 kg moving at a velocity of 16 m/s

A paratrooper whose parachute fails to open lands in snow; he is hurt slightly. Had he landed on bare ground, the stopping time would have been 10 times shorter and the collision lethal.

Find the work needed to lift a 20-N book 2 m.

Are the objects described here in static equilibrium, dynamic equilibrium, or not in equilibrium at all? a. A girder is lifted at constant speed by a crane. b. A girder is lowered by a crane. It is slowing down. c.

Two circles are drawn in a 12-inch by 14-inch rectangle. Each circle has a diameter of 6 inches. If the circles do not extend beyond the rectangular region, what is the greatest possible distance (in inches) between the centers of the two circles?

The cooled lava pools on the surface of a crater are called what? 1. Craters 2. Terrae 3. Maria 4. Reoglith

Discuss how electromagnets have been created that are strong enough to pick up cars in a wrecking yard and are able to be switched off, dropped the cars onto a scrap pile to be crushed.

A block with mass m1 = 9.4 kg is on an incline with an angle θ = 25° with respect to the horizontal. For the first question there is no friction, but for the rest of this problem the coefficients of friction are: μk = 0.22 and μs = 0.242.

What is tendonitis? a. inflammation of the tendon c. tear in the tendon b. overstretched tendon d. none of the above

Two sections, A and B, are 0.5 km apart along a 0.05 m diameter rough concrete pipe. A is 115 m higher than B, the water temperature is 4 °C, and the pressure heads measured at A and B are 21.7 m and 76.1 m, respectively.