Su calu
Alb. 14
, 6
B. 2075 Set B Q. No. 9d A body is projected upwards makings
angle with the horizontal with a velocity of 300 ms -1
the value of angle so that the horizontal range will be maxim
Hence find its range and time of flight.
Ans: 45°, 9000 m, 42.42 se

What is required for an electric charge to flow through a wire? zero resistance in the wire a balance of electric potential high resistance in the wire a difference in electric potential

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.