1. A water heater has a resistance of 502 and takes 15A during operation. If it is in service on the average of 45minutes per day, how many kWh of energy will be consumed for 2 weeks?
1. A water heater has a resistance of 502 and takes 15A during operation. If it is in service on the average of 45minutes per day, how many kWh of energy will be consumed for 2 weeks?
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:II. Problem Solving. Show your solutions. Box your final answer.
1. A water heater has a resistance of 502 and takes 15A during operation. If it is in service
on the average of 45minutes per day, how many kWh of energy will be consumed for 2
weeks?
2. Two particles with charges of 5 uC and 8µC attract each other with a force of 65mN.
Determine the separation distance between the two particles.
3. What separation distance is required if the attractive force between an electron and a
proton is 50N?
4. The distance between two identical charges is 20cm and experiencing 50kN of force.
Find the value of the charges.
5. A sphere has a negative charge of 640nC. Approximately how many electrons must be
removed to make the sphere neutral?
6. How much electrical energy in kWh is delivered to an electric motor during a 48
minutes' operation from a 220v source if it draws 12A of current? If Meralco takes
Php12.00 per kWh, how much is the electric bill cost for 1 month? Assume 1 month =
30 days.
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