Αποτελέσματα Αναζήτησης
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.
Task: Define the term power in relation to energy transfer. Task: Using the answer to the previous question, calculate their power output. If the work output performed by those heavy horses took 15 minutes; then what is their power output? Ensure your answer is given in the SI unit of power. 15 minutes
Power is the rate of energy transfer. It is a measure of how quickly energy can be transferred from one energy store to another. There are two equations that you need to know, Power is measured in Watts, W. It can also be measured in Joules per second, J/s. However, the standard in GCSE is Watts,W. 1 Watt = 1 Joule per second.
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.
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.
Practicing "explain" exam style questions. Practicing the principles of electricity and currents. 1. Define the following terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.
