4 The term V/2g is known as (a) kinetic energy (b) pressure energy (c) kinetic energy per unit weight (d) none of the above
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- 20. If 60 percent of the potential energy of water flowing over a dam can be converted to electricity, find the maximum power output, in kW (kilowatts), for a dam 50 m high where the water crosses at a rate of 300,000 kg/min (1 watt = 1 joule/sec, 1 kW = 1000 watts)State differences between kinetic energy and potential energy.2. The same cart and hanging mass given above are released from rest. How far has the cart traveled by the time it reaches a speed of 1.00 m/s?
- 3. A container 50 ft by 100 ft by 20 ft deep is half-filled with a liquid (filled to a depth of 10 ft). How much work is done in pumping all the liquid out of the container to a height of 2 ft above the top of the container? (The liquid's density is 60 lb/ft³.) Your answer should include units.27.The potential energy function for either one of the two atoms in a diatomic molecule is often approximated by U (x)=-a/x¹² -b/x6 where x is the distance between the atoms. (a) At what distance of seperation does the potential energy have a local minimum (not at x = ¥)?(b) What is the force on an atom at this separation? (c) How does the force vary with the separation distance? Solution a. -2a b 1/6 ; b. 0; c. ~x65. A ball is tossed up in the air and then falls back down to the height it was tossed. The system is the ball, person, and earth field. Create five energy pie charts, and a set of energy bar charts to represent the scenario.