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How much work can one joule of energy do?
One joule is defined as the amount of work done when a force of one newton is exerted through a distance of one meter. In the English system of units, where force is measured in pounds, work is measured in a unit called the foot-pound (usually abbreviated ft-lb).
What is a joule which is a unit of work equal to?
Joule, unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre. Named in honour of the English physicist James Prescott Joule, it equals 107 ergs, or approximately 0.7377 foot-pounds.
What do you understand by 1 joule work 1 joule energy and 1 watt power?
To do, we must recall the definition of work. Hence, I J is simply the work done by a force of 1 Newton on an object which moves through a distance of 1 metre. P=Wt where t is the time taken to do the particular work. Hence, 1 Watt is the power of a force, if it does a work of 1 Joule in 1 second.
How do you calculate work and power?
Power is equal to work divided by time. In this example, P = 9000 J /60 s = 150 W .
Is 1000 joules a lot?
A unit with up to 1000 joules of surge protection is adequate for these small electronics. A surge protector with 1000 to 2000 joules will provide sufficient protection for power tools and office equipment such as printers, copiers and routers.
Which is another form of 1 joule?
Answer. Explanation: A watt-second (symbol W s or W. s) is a derived unit of energy equivalent to the joule.
What is the formula for 1 joule?
Work (Joule)= F × D = [M1 L1 T-2] × [L1] = [M1 L2 T-2]. Therefore, Joule is dimensionally represented as [M1 L2 T-2].
Is 1 joule a lot?
This is due to the fact that a joule is an extremely small amount of energy. To put how small a joule is into perspective, a liter of gasoline has 31,536,000 joules of energy in it. A kilowatt-hour is equal to 3,600,000 joules.
Is higher joules better?
2. All about the joules. Generally, the more joules the better, as this means the device can handle one large surge, or multiple smaller surges, before your gear is in danger. Over time, the parts inside the protector wear down, reducing its effectiveness.
The joule (J) is the metric unit of measurement for both work and energy. The measurement of work and energy with the same unit reinforces the idea that work and energy are related and can be converted into one another. 1.0 J = 1.0 N∙m, the units of force multiplied by distance. 1.0 N = 1.0 k∙m/s 2, so 1.0 J = 1.0 k∙m 2 /s 2.
How is energy related to capacity to do work?
Capacity of doing work by a body is called energy. Energy is a scalar quantity i.e. it has only magnitude but no direction and its unit is joule. The energy required to do 1 joule of work is called 1 joule energy. The unit joule is named after a British physicist James Prescott Joule.
Which is the unit of energy and work?
The basic unit of energy and work is the Joule (J): 1 Joule is the work done by 1 Newton moving 1 meter. 1 J = 1 N × 1 m. The Joule has the units N m, or kg m2/s2 (because a Newton is kg m/s 2) Only force and movement in the same direction count, so a more accurate description is:
How many joules in an hour is a kilowatt?
A kilowatt, a thousand Joules/second, times 3600 seconds in an hour, is 3,600,000 Joules – 3.6 megaJoules (MJ). You often see a neat division by a thousand in articles about power stations.