Write an acrostic of the word power below. P – O – W – E – R –
The Correct Answer and Explanation is:
Here’s an acrostic for the word “POWER,” with each line related to the physics concept of power:
P – Power is the rate at which work is done.
O – Objects with more mass require more power to move.
W – Work done divided by time gives the power.
E – Energy transfer per unit time is power.
R – Resistance affects the power in an electrical circuit.
Explanation:
Power, in physics, refers to the rate at which work is performed or energy is transferred. This concept plays a key role in understanding how machines and systems operate in terms of efficiency and energy use. The basic formula for power is:P=WtP = \frac{W}{t}P=tW
where PPP is the power, WWW is the work done (or energy transferred), and ttt is the time it takes for the work to be done. This tells us that power measures how quickly energy is transferred or used.
In relation to objects with mass, the more massive an object is, the more power is required to move it at the same speed, due to the need to overcome inertia. This concept is linked to Newton’s second law of motion.
Furthermore, power is not just about work or motion. In electrical systems, power is also influenced by resistance. According to Joule’s law, the power dissipated in a resistor is given by:P=I2RP = I^2 RP=I2R
where III is the current and RRR is the resistance. This shows how electrical power depends on both the amount of current flowing and the resistance in the circuit.
In essence, power is a measure of how efficiently work or energy is used over time. Whether in mechanical systems, electrical circuits, or other areas, power helps us understand how energy flows and is converted in different processes.
