102N
70N
140N
112N
Correct answer is D
Pressure = Force / Area = Weight of the man / Area of his feet
=> 2.8 x 103 = Weight of the man / 4 x 10-2
∴ Weight of the man = 2.8 x 103 x 4 x 10-2
= 112N
The product of force and time is? ...
Calculate the rate at which energy is used up in the circuit illustrated by the diagram ...
Which of the following does NOT cause a reduction of the surface tension of water? ...
What type of reaction is represented by the following scheme? 21X + 21Y + \( ^...
What amount of current would pass through a 10 Ω coil if it takes 21s for the coil to just mel...
Which of the following is not a component of a d.c. electric motor? ...