Long range hitting| Batting tips by Coach Dhruv

Long range propagation is not possible by space wave propagation because

Long range radio transmission is possible when the radio waves are reflected from the ionosphere. For this to happen the frequency of the radio waves must be in the range:

The helmet of the wicket keeper is kept on the ground and the ball that the batsman strikes hits the helmet. How many penalty runs are given to the batting team for this occurrence?

Long range transmission of TV-signal is done by

A cricket ball of mass 150 g moving with a speed of 123 km/h hits at the middle of the bat, held firmly at its position by the batsman.The ball moves straight back to the bowler after hitting the bat.Assuming that collision between ball and bat is completely elastic and the two remain in contact for 0.001s , the force that the batsman had to apply to hold the bat firmly at its place would be

A cricket ball of mass 150g moving with a speed of 126km//h hits at the middle of the bat, held firmly at its position by the batman. The ball moves straight back to the bowler after hitting the bat. Assuming that collision between ball and bat is completely elastic and the two remain in contact for 0.001s , the force that the batsman had to apply to hold the bat firmly at its place would be

A pitcher throws a 0.140 -kg baseball, and it approaches the bat at a speed of 40.0 m/s. The bat does W_(nc)= 70.0J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0 m above the point of impact.

Propeller blades, 2 m long , ar e rotating at 1800 rpm. What is the linear speed of the tip of the blades ?

A circket ball of mass m is bowled at a batsman and gets to the bat travelling at v m/s. The batsman hits the ball and it leaves his bat after t seconds at a speed of v/2 m/s. The magnitude of the force on the ball in newtons is

A batsman hits a sixes and the ball touches the ground outside the cricket ground. Which of the following graph describes the variation of the cricket ball's vertical velocity v with time between the time t_1 as it hits the bat and time t_2 when it touches the ground?