Explain how a power screwdriver works in terms of energy conservation and work and force.
power is defined as follows:
P = Fv
= [F.s/ t]
= torquexangular speed
= work done / time interval
use the above equations to find the power of the screwdriver.
Explain how a power screwdriver works in terms of energy conservation and work and force.
14 Explain in terms of conservation of energy why sweating cools your body, even though the sweat is at the same temperature as your body. Describe the forms of energy involved in this energy transformation. Why don't you get the same cooling effect if you wipe the sweat off with a towel? Hint: The sweat is evaporating.
How is either the work-kinetic energy theorem or the law of conservation of energy apply to an object moving down an incline? Can you think of any other exmples of these principles?
For a home repair job you must turn the handle of a screwdriver 32 times. Part A If you apply an average force of 15 N tangentially to the 2.0-cm-diameter handle, how much work have you done? Part B If you complete the job in 22 seconds, what was your average power output?
law of conservation of energy, matter, and momentum. how do you explain these laws?
a. Write general form of conservation of energy equation for an open system and explain each term (5 points) b. Write general form of conservation of momentum equation for an open system and explain each term (5points) c. How do we define "flow work" and why is it important? (5points)
What are three main power sources, describe where the energy comes from, and discuss in terms of conservation of energy
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hi h2 13 datum Base don Conservation of Energy and the Work-Energy Theorem, find an expression for the velocity of the ball when it is at the top of thehs hill in terms of hi and g
How does this experiment (Heats of Reaction) illustrate the Law of Conservation of Energy? Explain using your experimental results. (I got experimental data of 57,671.2J; adding together experiment 1 and 2, while experiment three got a total of 64,486.3J. Yes, I know, a lot of experimental error) but I'm confused on what this has to do with Law of Conservation of Energy?
PS-5 Written Problems (50 points) - Tutorial: Conservation of energy with energy bar charts Name Work done by a constant force: W = .d = Fd cose W = Fparalleld Helpful Equations: mgh = U,Gravitational potential energy kx? = Us - Elastic potential energy mv2 = KE - Kinetic Energy 1. Using energy bar charts for conservation of energy problems Bar charts are conceptual tools that represent conservation of energy. • A vertical bar is used to represent the amount...