Answer:
<em>An object is said to be rated </em><em>1 Watt </em><em>when it performs a work worth </em><em>1 Joule </em><em>in </em><em>1 second.</em>
Explanation:
<em>We know that power is rate of doing work or Work done in a given period of time.</em>
<em>Power is simply given by the formula:</em>
<em>Power=(Work)/(Time)</em>
<em>The SI unit of Power, Work and Time are Watts, Joules and Seconds respectively.</em>
<em>Hence, 1 Watt=1 Joule/ 1 Second</em>
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Answer:
Answer:
A. Increasing the number of lines per length.
The strength of the fireman in vertical direction will be given by F = m * g. Then, the work done will be given by definition by W = F * d. Substituting the expression of the Force in that of the work, we have that the work will be W = m * g * d. Substituting the given values and assuming that g = 10m / s ^ 2, we have a total work of W = (73) * (10) * (9) = 6570 J
Explanation:
The weight of a body depends on the acceleration due to gravity at a particular place.
Weight is a form of force on a body but this type depends on the gravitational force from places to places.
Weight = mass x acceleration due to gravity.
Assuming that mass is constant, the acceleration due to gravity is directly proportional to the weight.
The higher the acceleration due to gravity of a body, the more it weighs and vice - versa.