2.5 minutes
5.7 minutes
6.7 minutes
7.5 minutes
9.5 minutes
Correct answer is C
t = \(\frac{mc\theta}{p}= \frac{2\times4200\times50}{210\times5} \\ = 400s = 6.7\)
The mechanical advantage(MA) of an inclined plane depends on ...
In a cathode ray tube, the function of the x-plates is to ...
The handle of a screw jack is 35 cm long and pitch of the screw is 0.5 cm. What force must be a...
Calculate the temperature change when 500J of heat is supplied to 100g of water ...