pph1011 said:Homework Statement
A machine does work at a rate given by , P=ct^2 where c= 18 W/s^2 and t is time.
Find the work done by the machine between 9.0s and 18s .
Homework Equations
P=w/t
The Attempt at a Solution
no ideas
The formula for calculating power is Power = Work / Time, where power is measured in watts (W), work is measured in joules (J), and time is measured in seconds (s).
To determine the power output of a machine, you can use the formula Power = Force x Velocity, where power is measured in watts (W), force is measured in newtons (N), and velocity is measured in meters per second (m/s). This formula is commonly used for calculating the power output of engines and motors.
Power and energy are closely related concepts. Power is the rate at which energy is transferred or used, while energy is the capacity to do work. In other words, power is the amount of energy used per unit of time. The unit of energy is the joule (J), and the unit of power is the watt (W).
AC (alternating current) and DC (direct current) are two types of electrical power. AC power is generated by power plants and alternates direction at a specific frequency, usually 60 cycles per second in the US. DC power, on the other hand, maintains a constant direction and is commonly used in batteries and electronic devices.
There are several ways to reduce your power consumption, such as turning off lights and electronics when not in use, using energy-efficient appliances and LED light bulbs, and adjusting your thermostat to save energy. Conserving energy not only reduces your power usage, but it also helps save money and protect the environment.