ou do work?
Q: If the power generated by a wind system at a height of 50 m is equal to 30 kw at a wind speed of 4…
A:
Q: When you go upstairs, you ______? a.do not work at all b. do less work when you walk than when you…
A: Work - Energy transfer from one thing to another, especially to cause the second object to move in a…
Q: Which of the following statements is false? a. The work done by a conservative force is always zero…
A: Here from all four option → option (b) is false. Explanation: 1.Work is a displacement of any…
Q: Efficiency
A: the values provided in the question are as follows- effort = 750n load = 4000 n no. of pulleys = 3…
Q: Define REVERSIBLE STEADY-FLOW WORK
A: Definition: The steady flow devices deliver the most and consume the least work when it undergoes a…
Q: Part A: How much work is done when you push a crate horizontally with 150 N across a 15-m factory…
A: A)The work done in pusing the crate is,
Q: power is developed? 7750 W 12.4 W 17.6 W 122 W llit a crate is 310 J. If the crate is lifted in 25s,…
A: Work required (W) = 310 J Time (t) = 25 s
Q: How can the total energy remain the same,but the energy available to do work decrease?
A: The system's total energy is conserved means that that the energy can not be created or destroyed.…
Q: If the calories needed to ascend a 7-storey building are 60 Kcal, and your body efficiency is 17%,…
A: Write the given values with the suitable variables. Q=60 kcalη=17%=0.17 Here, Q is the food energy…
Q: Explain what it means for a force to do work on an object.
A: The work done is given by
Q: here are almost no machines with an efficiency of 100%. Friction causes energy to be ‘lost’ as heat.…
A: There are almost no machines with an efficiency of 100%. Friction causes energy to be ‘lost’ as…
Q: (a) What is the efficiency of an out-of-condition professor who does 2.20 ✕ 105 J of useful work…
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Q: (a) What is the efficiency of an out-of-condition professor who does 2.10 x 10° J of useful work…
A: a) We know that, efficiency= (output/input)x100 So here output is 2.10×10^5 joule and input is…
Q: effi 50 O60 O70 80
A: GivenInput Power, Pin=50 WMass of object, m=10 kgHeight, h=2 mTime, t=5 s
Q: You lift your 8.4 kg back pack off your bedroom floor and place it on your desk. It your desk is 2.7…
A: Given mass m = 8.4 kg displacement = height h = 2.7 m
Q: Why does the force of gravity do work on a car that rolls down a hill but no work when the same car…
A: We know the expression for work is W= F.scosθ The force of gravity do work on a car that rolls…
Q: work
A:
Q: What is the efficiency of an out-of- condition professor who does 2.10 x 10^5 J of useful work while…
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Q: A 5 lb bucket attached to a rope is lifted from the ground into the air by pulling in 21 ft of rope…
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Q: Explain what does work do to the total amount of energy?
A: Work is said to be done when a force is applied through a distance.This means that when a force is…
Q: Actual Mechanical Advantage
A: THEVALUES PROVIDED IN THE QUESTION ARE AS FOLLOWS- LOAD = 6000 N EFFORT = 2000 N WHEEL ROTATE A FULL…
Q: A 0.135 kg ball is thrown straight up from 2.33 m above the ground. Its initial vertical speed is…
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Q: What are informed about a particular force: "the force is inversely proportional to the cube of the…
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Q: Calculate the energy used per day (kWh) of a car with an efficiency of 12 kilometers per liter and…
A: Answer:- 12.5 kW h Given Total distance travelled by the car per day (S) = (90)/(6) = 15 km per…
Q: an example of work kinetic energy expression
A: Work-Energy Theorem: The change in kinetic energy of a body equals the net work performed on it,…
Q: A force of 5 N exerted on a small piston in a hydraulic press causes an output force of 500 N at the…
A: Force exerted on small piston (f) = 5 N Output force (F) = 500 N
Q: Describe the Principle of Virtual Work?
A: virtual work
Q: How fast can you get work done choose the formula that is implied F=m a Ek=1/2mv^2 P=w/t Efficiency…
A: Power is defined as the rate at which work is done. Power=Work doneTime taken
Q: True or False: Machines ONLY increase the amount of work that is done. A True B False
A: Solution: Given: True or False. Machines ONLY increase the amount of work that is done. A. True B.…
Q: how to know if work is done towards the system or done by the system
A: In simple words if we give energy to system then this means work done on the system. also this means…
- How can you measure the rate at which you do work?
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