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To calculate the energy in joules, you can use the formula: energy (in joules) = mass (in kg) × acceleration due to gravity (9.81 m/s^2) × height (in meters). This formula is commonly used for gravitational potential energy calculations.

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Q: How do you work out joules?
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Does 200 joules of work done in 20 seconds involve more power than 50 joules of work done?

Yes, because power is a measure of how quickly work is done. In this case, the power for the 200 joules of work done in 20 seconds would be 10 watts, while the power for the 50 joules of work done would be 2.5 watts. Hence, 200 joules of work done involves more power than 50 joules of work done.


How much power is necessary to do 60 joules of work in 20 seconds?

The power required to do 60 joules of work in 20 seconds is determined by the formula: Power = Work / Time. Therefore, Power = 60 joules / 20 seconds = 3 watts. So, 3 watts of power is necessary to do 60 joules of work in 20 seconds.


What are two different units that represent work?

Two different units that represent work are joules (J) and ergs (erg). Joules are a standard metric unit for work and energy, while ergs are a unit commonly used in physics and are equal to 10^-7 joules.


How much heat is generated by 1700 joules of work?

The heat generated by 1700 joules of work depends on the efficiency of the process. In an ideal case where all the work is converted into heat, the heat generated would also be 1700 joules. However, in real-world scenarios, the heat generated would be less due to energy losses.


A student does 300 joules of work pushing a cart 3.0 meters due east and then does 400 joules of work pushing the cart 4.0 meters due north the total amount of work done by the student is?

The total work done by the student is the sum of the work done in each direction. The work done pushing the cart 3.0 meters east is 300 Joules, and the work done pushing the cart 4.0 meters north is 400 Joules. Therefore, the total work done by the student is 300 Joules + 400 Joules = 700 Joules.

Related questions

what is work measured in?

Work is measured in Joules.


Find the efficiency of a machine that does 800 joules of work if the input work is 2400 joules?

.33


What kind of force times work equals 40 joules?

Force times work doesn't give joules. Joules is a unit of energy or work. Perhaps you mean the relation: force x distance = work.


What is the rate at which work is done?

Work is energy, measured in joules. The rate of work, or joules per second, is known as watts, or power.


Does 200 joules of work done in 20 seconds involve more power than 50 joules of work done?

Yes, because power is a measure of how quickly work is done. In this case, the power for the 200 joules of work done in 20 seconds would be 10 watts, while the power for the 50 joules of work done would be 2.5 watts. Hence, 200 joules of work done involves more power than 50 joules of work done.


What can work be calculated from?

Work is measured in Joules.


Work is measuring in?

Joules


If you do 900 joules of work in 10 minuteshow much power have you used?

10 joules of work in 1 second


What is the application of rational algebraic expression in real life situation?

Manufacturing. A machine has a work output of 14ax4 j (joules) and a work in put 7a2x5 j. What is the eficiency of the machine? efficiency in % = work output in joules work input in joules


If the work put into a lever is 930 joules and the work accomplished is 870 joules the efficiency of the lever is?

The efficiency of the lever can be calculated as the ratio of the output work to the input work, multiplied by 100% to express it as a percentage. In this case, the efficiency would be 870 joules (output work) divided by 930 joules (input work), multiplied by 100% which equals 93.55%.


What is the rate at which what is done?

Work is energy, measured in joules. The rate of work, or joules per second, is known as watts, or power.


What is the change in internal energy if 20 joules of heat is released from a system and the system does 50 joules of work on the surroundings?

-70 Joules