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Push a heavy box with a small force. It does not move. Now gradually increase the force, the box till does not move.
A) force increases, friction increases
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If A pump can take 5 hrs to fill a 50 l of tank then how much time to take to fill a 75 liters of tank for the same pump?
Correct option is (D) \(7\,\frac{1}{2}\) hrs \(\because\) Time taken to fill a \(50\,l\) of tank = 5 hours \(\therefore\) Time taken to fill a \(75\,l\) of tank \(=\frac5{50}\times75\;hours\) \(=\frac{75}{10}\;hours\) = 7.5 hours = 7 hours + \(\frac12\) hours = \(7\frac12\) hours
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If A pump can take 5 hrs to fill a 50 l of tank then how much time to take to fill a 75 liters of tank for the same pump?
2 Answers
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A body of mass `2kg` moving on a horizantal surface with an initial velocity of comes to rest after `2` second. If one wants to keep this body moving
Correct Answer - C `v=u+at,F=ma`
2 Answers 1 views
A healthy poor man is happier than a sick moneyed man. (Use positive degree)
A sick moneyed man is not so happy as a healthy poor man.
2 Answers 42 views
We are not free from danger. Danger often comes where, ___
We are not free from danger. Danger often comes where, it is feared.
2 Answers 2 views
Restless life is risky. We have to take rest, ___
Restless life is risky. We have to take rest, to regain our strength.
2 Answers 1 views
If a man does not work hard, ___
If a man does not work hard, he cannot shine in life.
2 Answers 1 views
If we are not healthy, ___
If we are not healthy, we cannot be happy in life. / we cannot enjoy this beautiful world.
2 Answers 1 views
So, we should take a rest so that___
So, we should take a rest so that we can keep fit.
2 Answers 1 views