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What is the power of the horse? (Hint: Convert time to seconds.) 6. A wagon is pulled at a speed of 0.40 meters/sec by a horse exerting an 1,800-newton horizontal force. What is the power of this horse? 7. Suppose a force of 100 newtons is used to push an object a distance of 5 meters in 15 seconds.
The British imperial unit for power is foot-pound per second. This unit is too small for practical purposes, so the greater unit horsepower (abbreviated as hp) is used. One horsepower = 550 foot-pound per second = 764 Watt = ¾ kilowatt.
Define the term power. a. Power is the ............. Which example has a higher power? 3. Explain your answers. 4. What are the factors affecting power? 2. An electric motor transfers 8000 J of energy in 2.5 seconds. Calculate its power. 3. A weightlifter gives a dumbbell 6 00 J of gravitational potential energy store in 1.2 seconds.
Physics Worksheets As .pdf files. HSPhysics 01 Motion Notes.pdf: 2.54Mb; HSPhysics 01-01 Introduction, Units, and Uncertainty.pdf ... HSPhysics 06 Energy Notes.pdf: 1.92Mb; HSPhysics 06-01 Work and Power.pdf: 305.43kb; HSPhysics 06-02 Types of Energy.pdf: ... Notes used for OpenStax College Physics 1st Edition available here.
much power was used? 11. How much time is needed to produce 720 Joules of work if 90 watts of power is used? 12. If 68 W of power is produced in 18 seconds, how much work is done? 13. A set of pulleys lifts an 800 N crate 4 meters in 7 seconds. What power was used?
How do you calculate electrical power? In this skill sheet you will review the relationship between electrical power and Ohm’s law. As you work through the problems, you will practice calculating the power used by common appliances in your home.
Power is a way to describe how quickly energy is transferred from one store to another or one object to another. For example, the power of your kettle tells you how quickly electrical energy is converted to thermal energy to heat up the water. The definition of power is: the rate at which energy is transferred.
