Power is defined as Work divided by Time. Typically, work is caculated using in Joules and Time in seconds. 1 Joule per second is 1 Watt, the unit of power in the International System of Units.
Magnification
That depends a lot on what type of energy is used as input. For example for electrical energy, the input voltage and the input current would have to be measured; multiplying the two should give the input power. (There's actually also a "power factor", but that factor is often close to 1.)
ninja
You use the definition of "efficiency": you divide output power by input power. Both of these, of course, need to be measured or calculated.
The magnification of the microscope
They take the amount of power plays and then dived it by how many were successful.
The quantity you pay for is energy. It's calculated as (power) x (time).
tao
Magnification
That depends a lot on what type of energy is used as input. For example for electrical energy, the input voltage and the input current would have to be measured; multiplying the two should give the input power. (There's actually also a "power factor", but that factor is often close to 1.)
70 %30 %
ninja
You use the definition of "efficiency": you divide output power by input power. Both of these, of course, need to be measured or calculated.
Total Amount: [Amount Paid] + [Current Due]
The magnification of the microscope
The efficiency of a machine is found by dividing the amount of work done by a machine by the amount of energy used by a machine. The answer is then multiplied by 100 to give a percentage.
refers to the power of a microscope;calculated by multiplying the power on the objective by the power on the eyepiece?