Write the energy transformation in Washing machine.
What transformation of energy takes place when current is drawn from a cell ?
A and B are two separate reservoirs of water. Capacity of reservoir A is double the capacity of reservoir Bdot Both the reservoirs are filled completely with water, their inlets are closed and then the water is released simultaneously from both the reservoirs. The rate of flow of water out of each reservoir at any instant of time is proportional to the quantity of water in the reservoir at the time. One hour after the water is released, the quantity of water is reservoir A is 1 1/2 times the quantity of water in reservoir Bdot After how many hours do both the reservoirs have the same quantity of water?
Increase in the BOD of water reservoir is due to
In a Carnot engine , the temperature of the reservoir is 927^@C and that of sink is 127^@C . If the work done by the engine when it transfers heat from the reservoir to sink is 12.6xx10^6 J . the quantity of heat absorbed by the engine from the reservoir is
Water flows through a tunnel from the reservior of a dam towards the turbine installed in its power plant . The power plant is situated h metre below the reservoir . If the ratio of the cross sectional areas of the tunnel at the resercoir and power station end is eta , find the speed of the water entering into the turbine .
A reservoir is in the form of a rectangular parallelepiped (cuboid). Its length is 20\ mdot If 18\ k l of water is removed from the reservoir, the water level goes down by 15 c mdot Find the width of the reservoir (1\ k l=1\ m^3)
Water is pouring into a cubiodal reservoir at the rate of 60 litres per minute. If the volume of reservoir is 108m^3, find the number of hours it will take to fill the reservoir.
An ideal Carnot heat engine with an efficiency of 30% . It absorbs heat from a hot reservoir at 727^(@)C . The temperature of the cold reservoir is
