X- points away from the charge
y- points in the direction of the force on the positive charge
z- points toward the charge
Answer:
It is given that the weight of the person is 102 N
We have the force that shall be needed to being the man out in minimum amount of time shall correspond to the maximum tension that can be developed
Thus using Newton's second law we obtain the acceleration that the man shall attain
Now using second equation of kinematics to obtain time 't' we get
Answer:
(a) 220.46 Watt
Explanation:
m = 237 g
T1 = 20 degree C, T2 = 100 degree c , t = 6 minutes = 6 x 60 = 360 seconds
V = 120 V, c = 4186 J/kg C
(a)
Heat required to raise the temperature = m x c x (T2 - T1)
H = 0.237 x 4186 x (100 - 20)
H = 79366.56 Joule
Power = Heat / time = 79366.56 / 360 = 220.46 Watt