How much energy does a 50-watt light bulb use compared to a 100-watt light bulb if both are shining for the same length of time? Explain your answer.

Question

kropot72 · Answer

Energy is the power multiplied by the time the power is dissipated:
$$E=W \times t$$
In the question, the value of t is the same for both the bulbs while shining. However the value of W for the 50 watt bulb is half the value of W for the 100 watt bulb.
Therefore the ratio of the energy consumed by the 50 watt bulb to the energy consumed by the 100 watt bulb when both are shining for the same length of time is:
$$\frac{50}{100}=you\ can\ calculate$$

anonymous · Answer

thank you :) can you help with another question?

anonymous · Answer

identify two types of nuclear reactions in which the equation e=mc2 applies @KaoKao