Is this a trure/false? if it is then it is true
Answer:
Explanation:
Given
Cross-sectional area of two areas is


It is filled with oil of density 
mass of car place on Large area 
Suppose a mass of m kg is placed on smaller area
According to pascal law's intensity of pressure is same at every point on Liquid




PVI, so the power used would be 240*5= 1200 Watts.
Answer:
Explanation:
Given
mass of box is m
speed of box is v
coefficient of friction 
Box is moving at a constant speed i.e. Net Force on box is zero
i.e. Frictional Force and Force Applied are Equal

The Rate at which power is generated is



20 cm = bright
40 cm = dim
The longer the wire the bigger the resistance