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Download Grade 4 Science Worksheet Cloze Of Olympiadtester On The Chapter Work Force And Energy In Pdf Format Highly Exam Preparation Exam Olympiad Exam
Power is measured in joules per second j s r o watts w and is worked out using the formula.
Work and power worksheet pdf. E p 7 95j. Work power worksheet author. Power is measured in.
You must exert a force of 4 5 n on a book to slide it across a table. For instance when a block is being pulled with tension t by a string whose angle of inclination is θ to the horizontal. Please circle your final answer and be sure it has the proper label.
P 2 07 104watts 2 a 0 45 kg book sits on a shelf 1 80 m above the floor. Much work is done express your answer in both english and metric units of work. Power is the rate at which is done.
We define power as. Why are both energy and work measured in joules. If the pump s power output is 250 horsepower how long will it take to pump all 3000 gallons to reservoir.
Rule for power power work time in watts in joules in seconds p w t questions 1. Pf1 5 work energy and power page 2 of 5 june 2012 note. If the trip takes 7s to complete calculate the person s power.
Energy work and power energy if you own a car it will not move without fuel. P f x d t power is measured in watts. Work is a scalar quantity.
Work power worksheet. Power work done time taken and using symbols we write this as. If you do 2 7 j.
The concept of power is concerned with how rapidly energy is being transferred or transformed when work is done. A calculate the gravitational potential energy of the book relative to the floor. It is the rate of work done or rate of energy transfer.
A ball with a weight of 30 newtons is kicked 2 metres into the air. At present this fuel could be petrol or alcohol or diesel fuel. Work energy and power worksheet pdf.
The unit of work is the joule j consider a force that acts at an angle. 1 25 2014 4 58 00 pm company. Work energy and power this worksheet and all related files are licensed under the creative commons attribution license.
But whatever fuel you use you are buying something with the. Wd e p mgh 70 x 10 x 5 3500j. Work and power worksheet answer each question by calculating for the missing variable.
In physics power is associated with energy and has a precise meaning. And in the future it could be hydrogen or electricity stored in a battery. What work has been done.
Worksheet work power and energy sections 9 1 9 6 1 what is the power of a crane that does 5 80 x 104 j of work in 2 80 s. A person of mass 70kg runs up a flight of stairs with a vertical height of 5m. In the past the fuel could just possibly have been coal.
Be sure to show all calculation work in the space provided.
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