Energy
Q: A 42-kg pole vaulter running at 11 m/s vaults over the bar. Her speed when she is above the bar is…
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Q: Which point/s is/are the state of the system?
A: In thermodynamics , the state of system is represented by specifying its pressure , volume and…
Q: A weightlifter lifts a 50 kg bar from the floor to a position over his head and back to the floor…
A: To find energy transformations that has taken place, by the weightlifter. Given, Mass of bar, m = 50…
Q: Suppose that F is applied on an object to move it a distance s. Further suppose that F is measure in…
A: We need to find work done .
Q: Question 9) During a board game called Rat Trap0, mechanical contraptions are activated in a…
A: The given values are, m=50.0 g=0.05 kgEloss=2.0 Jhi=17 cm=0.17 mhf=4.0 cm=0.04 mvf=13 m/s
Q: Wile E is back again! And again he's falling, this time from a 30m cliff. Wile E mass is 63kg. a.…
A: Given data: Height of the cliff (h) = 30 m HA = (1/3)h = 10 m Need to determine the speed at point…
Q: Five equal books weighing 0.85 kg and 2.50 cm thick each lie on a table. Calculate the potential…
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Q: A 54-kg pole vaulter running at 10 m/s vaults over the bar. Her speed when she is above the bar is…
A: Given:- mplayer= 50 kg vi= 10 m/s vf= 1.0 m/s yi= 0 m
Q: A water tower stores not only water, but (at least part of) the energy to move the water. How much?…
A: A water tower is used to supply water to a city or an area in a city for daily household usage. A…
Q: QUESTION 6 How much energy does it take to lift a 100 kg box from the floor to a 1.5 m high shelf?…
A: Given: m=100 kgh=1.5 m
Q: 4. I could better understand energy transfer if I ... Answer:
A: The capacity of doing work is called the energy of the body. The amount of work, that a body can do…
Q: While hovering, a particular flying insect applies an average force equal to three times its weight…
A: Givenmass, m=1 gm =0.001 kgdisance, d=1.5 mm =0.0015 mstrokes,…
Q: According to the law of conservation of energy: O Energy is conserved only when the device is 100%…
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Q: Q8 (a) (1) Distinguish between renewable and non-renewable energy sources giving an example of each…
A: We are allowed to answer only the first question. For solutions to other questions, please re-post…
Q: C7 21.) If a hair dryer is rated at 1300 W, how much energy does it require in 6 minutes?…
A: Power=Work/time Work=Power X time
Q: a helicopter lifts a 100kg crate straight up via cable, with an acceleration of 0.8m/s. if the crate…
A: mass = 100 kg acceleration = 0.8 m/s2distance = 5 m Apparent weight = m(g+a) = 100 (10+0.8) = 1080 N…
Q: A table saw—powered by an electric motor—was measured to consume 0.2 kilowatt hours (kW·h) of…
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Q: Common misconceptions about energy: (With Explanation) 1. Energy is truly lost in many energy…
A: Energy is conservative in nature. That means, conservation law is applicable to the energy…
Q: What information can you use to estimate the peak power output humans are capable of, and how could…
A: How Peak Power Information Can Improve Athletic Performance For sports that require bursts of power,…
Q: An airplane weighing 20,000 lb at ground is flying at an altitude of 35,000 ft at 600 miles per…
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Q: An 83kg man eats a banana of energy content 1.00x10^3 kcal. If all of the energy from the banana is…
A: Given that,Mass : m= 83 (kg)Energy : E =1×103 (kcal)Velocity : v0 = 0 (m/sec)Here we need to find…
Q: Now Jed and Kadia tackle a homework problem: An object of mass m, = 13 kg and velocity v, 5.5 m/s…
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Q: You and a flight attendant toss a ball back and forth in an airplane in flight. Does the KE of the…
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Q: A) Explain the Law of Conservation of Energy in the context of this problem.
A: The law of conservation of energy states that the total energy of any system during any process…
Q: A car is traveling in the x-direction and has the potential energy of 13000 j What is the…
A: potential energy = 13000 j The potential energy is due to the gravitational force acting on the car…
Q: n rain cloud at an altitude of 1.50 km contains 3.20 x 107 kg of water vapor. How long would it take…
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I just need to know what is the Energy Conservation Equation.
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- How much power is needed to lift a 750 kg elephant 14.3 m in 30.0 seconds? Paragraph V B I U A/ Ev + vric power companies use water to store energy. umped from a low reservoir to a high reservoir. he energy produced in 1.0 hour by a 180-MW wer plant, how many cubic meters of water will pumped from the lower to the upper reservoir? e upper reservoir is an average of 380 m above ne. Water has a mass of 1.00 x 10 kg for everyA 44-kg pole vaulter running at 10 m/s vaults over the bar. Her speed when she is above the bar is 1.5 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar. m
- 5. A AA battery is used to power a motor that raises a 10-g pencil tied to a string 33 meters until it is depleted. If 67% of the battery's energy is lost to the surroundings, how much energy was initially stored in the battery? System/Flow E, E, E, E, Position A Position B Energy (J) Energy (J)A 41-kg pole vaulter running at 11 m/s vaults over the bar. Her speed when she is above the bar is 1.5 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar. minstructions in photo
- 12:45 1 4) A roller coaster of mass 80.0 kg is moving with a speed of 20.0 m/s at position A as shown in the figure. The vertical height above ground level at position A is 200 m. Neglect friction. 200 m 160 m -- Potential Energy 0 A.What is the total mechanical energy of the roller coaster at point A? B. What is the total mechanical energy of the roller coaster at point B? C. What is the speed of the roller coaster at point B? Explain your D. What is the speed of the roller coaster at point C? answerDo #9 from the Energy WS 4 which is posted on Canvas. Make sure you define your system, draw your bar graphs, and write the conservation of energy equation. Finally solve symbolically and plug in for an answer.Under what conditions can you apply the law of conservation of energy?
- A child on a swing is released from rest at an angle of 60º from vertical. At the low point (0º from vertical), the swing and child together are 2 meters below the bar that the swing is attached to. Neglecting friction, use the energy approach to find the speed of the child at the low point. b) Suppose the 25 kg child’s speed is actually 3 m/s at the low point. How much energy was lost (work done by nonconservative forces) in this process?A 2500-W electric motor raises a 500-kg sack from a height of 2.0 m to 24.0 m in 50 s. The efficiency of the motor is: 8.8 % O 40 % O 86 % O 0.42 % O 95 %P В. A PA (Pa) 98 V VA (m³) 28 Vc (m³) 92 QABCA (J) 367 A.) Determine how much WORK the system would do going from A to C. B.) Determine how much WORK the system would do going from B to C.