physics

a pump fills a tank of capacity 300 m^3 in 5 hours.the tank is situated at a height of 20 m.if the efficiency of the tank is 65%. then calculate the power of the engine which has driven the pump.

1. 👍 0
2. 👎 0
3. 👁 150
1. work done=weight of water into tank*20m
power= work done/time
power=1/.65 * 300m^3*densitywater*g*20m/(5hr*3600sec/hr)

1. 👍 0
2. 👎 0

Similar Questions

1. MATH

two pump can individual fill the tank in 10 hours and 12 hours respectively while a third pump empites the full tank in 20 hours.If all the three pump are run simultaneously,in how munch time will be the tank be filled?

asked by pb on July 26, 2017
2. math

One pump fills a tank two times as fast as another pump. If the pumps work together they fill the tank in 18 minutes. How long does it take each pump working alone to fill the tank? mat

asked by Anonymous on June 16, 2016
3. maths

One pump fills a tank two times as fast as another pump. If the pumps work together they fill the tank in 18 minutes. How long does it take each pump working alone to fill the tank?

asked by Tim on February 2, 2014
4. Algebra I

Pump A, working alone, can fill a tank in 3 hours, and pump B can fill the same tank in 2 hrs. If the tank is empty to start and pump A is switched on for one hour, after which pump B is also switched on and the two work together,

asked by Meredith on June 30, 2010
5. Algebra

a worker has a new pump and an old pump. the new pump can fill a tank in five hours and the old pump can fill the same tank in 7 hours write and solve an equation for the time it will take both pumps to fill one tank if the pumps

asked by Kayla on August 27, 2015
6. Maths

There is a leak in the bottom of tank which can empty the tank in 8hours if a tap is open to the tank time taken to empty the tank is 12 hours if tap admitted 6liter water perhour find the capacity of tank

asked by Shivani on July 3, 2018
7. Math

Pipes A & B can fill a storage tank in 8hours and 12 hours, respectively . With the tank empty ,pipe A was turned on at noon, and then pipe B was turned on at 1:30 P.M.At what time was the tank full. Please help me!! Let V be the

asked by Ronald on December 5, 2006
8. Math

You are in charge of a tank to be used for water storage. Your boss has told you that he wants a cylindrical tank with a minimum capacity of 300,000 cubic feet. Your boss wants to spend the least possible amount in painting the

asked by Megan on May 15, 2008
9. maths

.A leak in the bottom of a tank can empty the full tank in 4hours.An inlet pipe fills water at the rate of 5lit a minute.When the tank is full, the inlet is opened and due to the leak,the tank is empty in 6 hours. How many litres

asked by ammu on January 10, 2016
10. Math

Tap A fills up a water tank in 45 mins. Tap A fills up_____(ugh soo right here for the answer... do i put it in a fraction or something?)of the tank in one min. Tap B fills up the same tank in 75 mins. Tap B fills up_____of the

asked by karen j. on April 13, 2007

More Similar Questions