Question

In this case, we're relating power to energy change, so we simply use the relationship P = E.t. Here, instead of work w, we use in the equation E), which is the amount of energy output or converted in the amount of time t. From this, what do we find the total energy output in joules to be?

Answer 1

To find the total energy output in joules, we use the formula E = Pt, where E is energy in joules, P is power in watts, and t is time in seconds.

Step-by-step explanation:

The question relates to the concept of power, energy, and time within the subject of Physics. Power is defined as the rate at which work is done or energy is transferred, and it is measured in watts (W), where 1 W equals 1 joule per second (1 J/s). When a device uses power over a certain time interval, we can calculate the total energy consumed using the formula E = Pt, where E is the energy in joules, P is the power in watts, and t is the time in seconds. This formula is versatile and can apply to various scenarios, such as finding the energy used by your body during exercise, the amount of heating by a power source, or even the radiation dose from an X-ray image.

Regarding the question about finding the total energy output in joules, if we know the power level in watts and the time for which this power was applied in seconds, we simply multiply these two quantities together using the relationship E = Pt to obtain the energy in joules.