Watt-Hour:A unit of energy equal to the total amount of energy that would be delivered in 1 hour of time if the rate of energy flow was 1 watt (one Joule per second). The number of watts times the number of hours equals the number of watt-hours. (Abbreviated Wh.) One watt-hour ...
So two or more forces acting in the same direction have the same overall effect as a single force equal to their sum, while two forces acting in opposite directions have an overall effect equal to their difference and acting in the direction of the larger force. We call this overall effect...
Step by step video, text & image solution for Define watt-hour. How many joules are equal to 1 watt-hour? by Physics experts to help you in doubts & scoring excellent marks in Class 12 exams.Updated on:21/07/2023Class 12PHYSICSUNIT & DIMENSIONS Topper's Solved these Questions UNIT & D...
(b) How many joules of energy does this appliance consume in a year? What unit is represented by (a) joule per coulomb (b) coulomb per second (c) watt second? Which of the following expresses 3 \times 10^{-4} m correctl...
Which is only 4.7 million tons of mass to energy conversion per second; work; 384.6 yotta watt seconds = 4.717 million tons (mass/sec) = 283 million ton (mass/ min) = 16,981 million ton (mass/hour) = 407,554 million ton (mass/day) = 148.9 trillion ton (mass/year) times 4 billio...
The human body radiates mainly in... Infrared Rays Thermal Radiation does not depend on what the object is made of True; Only depends on temperature Luminosity (L) Total amount of energy radiated by a body per second (Watt; Joules/sec) Energy Flux (F) Energy emitted per square/m per se...
40-watt bulb that burns for two hours The watt value printed on a light bulb tells the amount of energy the light bulb is using in joules per second. Which one of the following light bulbs is using the most energy? quantify the energy generated by a horse in mines ...
we can also define power as the rate of transfer of energy. Work and energy are measured in units of joules, so power is measured in units of joules per second, which has been given the SI name watts, abbreviation W: $$ 1\,\text{J/s}=1\,\text{W}$$. Another common unit for ...
Watt = Joules per SecondW=J/Sso you would have to work out how much power you get from the laser over a specific area (It will depend on distance, beam quality and the air / fluid it passes through)so you would measure the size of the laser's dot and get that size in m2l...
In other words, the product of current and voltage is power. Power And Energy p (t ) ? v (t )i (t ) w ? ? p (t )dt t1 t2 ?Unit: Watt Joule ?Unit: Review Definitions: 1. Current i — the rate of charge flow; 2. Voltage v — a measure of the energy transferred per ...