| GPE | KE | Work/Loss | Conservation | Energy Transfer |
|---|---|---|---|---|
|
1125 J
What is the GPE given:
75 kg 15 meters |
84.29 J
What is the KE given:
m = 14 kg v = 3.47 m/s |
- 75 J
What is loss given:
5 N 15 M |
a) 21 J total final energy
b) It is KE since he is moving and is going down to the reference level. c) Final energy, KE = 21 J
Bob starts at rest. He pedals up a hill. Once on top of the hill he has 31 J of GPE and 5 J of KE. He coasts down with 150 J of loss. What is his a) total final energy b) does he have GPE or KE, or both c) What is the final energies' value?
|
A. Pendulum
Which of the following are examples of objects that best demonstrate energy transfer?
A. Pendulum B. Bowling Ball C. Cup D. Pen |
|
16.04 ft --> 5 meters
60 J
What is the GPE given:
12 kg 16.04 feet |
1057.35 J
What is the KE given:
27 kg 8.85 m/s |
3.66 meters
What is distance given:
W = 19.4 J F = 5.3 N |
GPE, 840 J
A truck has a demolition ball attached that swings and hits a building. There is no work or loss. The final total energy is 840 J, 600 J of it being GPE, and 240 J being KE. What is the initial total energy, and is it GPE or KE?
|
Mechanical, Electrical, Radiation, and Thermal/Heat
What are the types of energy transfer?
|
|
147 kg
What is the mass given:
12936 J 88 meters |
71.38 kg
What is the mass given:
1013.91 J 5.33 m/s |
3 J
What is the work if there is no loss and the total energy at location A is 0.5 and the total energy at location B is 3.5?
|
a) 700 J
b) 500 J c) 500 J = KE
You start at the top of a skate ramp, with GPE 700 J of energy, as you go down, you lose 200 J. a) What is the Initial total energy? b) what is the final total energy? c) What type of energy is the final total made of?
|
Kinetic Energy --> Thermal Energy
What type of energy transfer is this:
Your hands are cold. You rub them together quickly to warm up. |
|
83.93 J
What is the GPE of a cat in a tree if he was on a branch 16 meters in the air, but moved to one 5 meters down, and he weighs 7.63 kg?
|
70 mph --> 31.29 m/s
25945.20 J
You are skydiving, 3800 meters above ground, moving at 70 mph. If you weigh 53 kg, what is your KE?
|
232.94 ft --> 71 meters
3150 J
If you apply 45 N of force, to an object to move it 232.94 feet, what is the total work? Neglect drag, friction, etc.
|
Location A: Total = 12 J
Location B: GPE = 9 J Location C:Total = 12 J KE = 12 J
A toy racecar is stopped at the top of a ramp with 12 J of GPE. At point B, halfway down the ramp, it has KE 3 J and 12 J of total Energy. At point C, if there is no loss or work, what is the total energy, and what type of energy? What is the total energy at point A? What is the GPE at point B if there is any?
|
Problem: not plugged in
Solution: electrical energy!
You want to cool your room down, so you turn your fan on. It doesn't work. What is the most plausible problem, and it's solution?
|
|
Yes, because energy cannot be created nor destroyed, it transferred from GPE to be KE once the snowboarder began moving and became fully KE once at the reference point.
If a snowboarder was at the top of a summit, and there was no work or loss, would the Location A = GPE be the same as the Location B = KE?
|
30 J
If a stationary ball was at the top of a cliff had a GPE of 30 J, what would the KE be once the ball began moving? Neglect Work/Loss/Drag
|
L = 324
What is the loss given that location A has 577 J of energy, but location B has 353 J of energy. There is 100 J of work between A and B.
|
Initial Total E = 0 J
E Total Final = 700 J GPE and KE are present.
You start at the bottom of a hill on a bike. What is your initial total energy? You pedal up the hill, putting in 800 J of work, and losing 100 J along the way. What is the final total energy? What are the energy forms present?
|
"A pendulum is a simple example of energy transfer – converting potential energy to kinetic energy over and over until the small amount of energy lost to heat and air resistance causes the pendulum to come to rest." ScienceLearn.org
When energy is transferring in a pendulum, how is it possible for the initial total energy of the GPE to be different than the final total energy of the KE?
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