A man whose mass is 80kg climbs a staircase in 20s and expends power of 120W. Find the height of the staircase.[g = 10ms^-2]

Similar Questions

Which of the following radiations have the highest frequency? ...

All the heat generated in a 5$\Omega$ resistor by 2A flowing for 30 seconds is used to evaporate 5...

Which of the following phenomena is the practical evidence for the existence of the continual motion...

An electric drill rated 400W is used to drill a hole in copper of mass 400g in 20s. Calculate the ri...

A wire of cross-sectional area 2π *  10$^-{8}$ m$2$ and resistivity 1.1 x 10\(...

An electric kettle with negligible heat capacity is rated at 2000W. If 2.0kg of water is put in it, ...

In measuring high frequency a.c, the instrument used is the ...

When a potential difference, V is applied across the ends of a resistor of resistance, R a Current, ...

A man of mass m, experiences a viscous drag, F and an upthrust, U as he descends towards the ground ...

Which of the following statements about the image formed by a plane mirror is not correct? ...