whenever work is done, energy is transferred. for a work to be done, in a scientific sense, a force must be exerted, and there must be displacement in the direction of the force. with this said, we can say that work is the product of the component of the force in the direction...
For example, if the predicted maximal heart rate is 200 beats per minute (BPM) and the test target heart rate of 90% of 200 BPM is achieved at a work load of 8 METs, then the max functional capacity may be estimated from the equation: 8 METS = 90% of maximal functional capacity; ...
Thus the defining equation for work W is given below, where f and s are the magnitudes of the force and displacement, respectively, and &phgr; is the angle between these two vector quantities (see illustration). Because f cos &phgr; · s = f· s cos &phgr; work may be defined ...
Learn in details about kinetic energy and work done with in-depth concepts and examples. To know more about kinetic energy and work energy theorem visit BYJU'S.
This equation shows that the effect of heat loss (Q˙<0) from a work-producing device (W˙>0) is to reduce the device's power output. Therefore, most work-producing systems (engines, turbines, etc.) are insulated to improve their efficiency. Similarly, heat loss from a work-absorbing ...
The work done to move a charge in an electric field is equal to the product of the magnitude of the charge and the difference in electric potential between the starting and ending points. This can be represented by the equation W = qΔV, where W is work, q is the charge, and ΔV ...
Work is done on an object when the object moves in the same direction in which the force is applied. When work is done When object moves in same motion as the force is applied. When work is not done When there is no motion Equation for work Work= Force times Distance Unit for work ...
Power Formula for Electricity In electricity, power is the rate at which electrical energy is transferred. It is measured in watts (W). The power equation is: P = VI where: P is power in watts (W) V is voltage in volts (V) I is current in amperes (A). This formula tells us tha...
Looking at this equation, you can see why soccer balls work the way they do: the harder you kick (the more the force), or the lighter the ball (the less the mass), the more acceleration you'll produce—and the faster the ball will fly through the sky....
Ensure you have the work done and the time in compatible units, typically joules for work and seconds for time. Apply the values to the equation: P = W / T. Divide the work by the time to find the power.ExampleImagine a pump lifts 200 liters of water to a height of 5 meters in...