355527
An engine pumps water continuously through a hole. Speed with which water passes through the hole nozzle is \(v\) and \(k\) is the mass per unit length of the water jet as it leaves the nozzle. Find the rate at which kinetic energy is being imparted to the water.
355528
A body is initially at rest. It undergoes onedimensional motion with constant acceleration. The power delivered to it at time \(t\) is proportional to
1 \(t^{2}\)
2 \(t^{1 / 2}\)
3 \(\mathrm{t}\)
4 \(t^{3 / 2}\)
Explanation:
Power \(P=F v=m a v\) If \(a\) is constant then \(v=a t(u=0)\) \(P=m a^{2} t \Rightarrow P \alpha t\)
355527
An engine pumps water continuously through a hole. Speed with which water passes through the hole nozzle is \(v\) and \(k\) is the mass per unit length of the water jet as it leaves the nozzle. Find the rate at which kinetic energy is being imparted to the water.
355528
A body is initially at rest. It undergoes onedimensional motion with constant acceleration. The power delivered to it at time \(t\) is proportional to
1 \(t^{2}\)
2 \(t^{1 / 2}\)
3 \(\mathrm{t}\)
4 \(t^{3 / 2}\)
Explanation:
Power \(P=F v=m a v\) If \(a\) is constant then \(v=a t(u=0)\) \(P=m a^{2} t \Rightarrow P \alpha t\)
