Question

7
If the unit of power is 100 erg/minute, the unit of force is 100 dyne and the unit of time is 100 seconds, the unit of
length is (in cm)
A.5/3​

Answer 1

Explanation:

If the unit of power is a million erg/minute, the unit of force is 1,000 dynes and the unitof length is 5/3 cm, what is the unit of time (in seconds)?

2 Answers



Les McLean, Ph.D. in Engineering

Answered September 10, 2018 · Author has 4.7K answers and 4M answer views

Power, P = 1,000,000 erg/min = 1,000,000 dyne-cm/min

Force F = 1000 dynes

Length d = 5/3 cm

Energy E = P x t

E = F x d

So, P x t = F x d

1,000,000 dyne-cm/min x t min = 1000 dyne x 5/3cm

t min = (1000 dyne x 5/3 cm) /1,000000 dyne-cm/min

t sec = (1000 x 5/3) x 60/1,000,000 = 100,000/1,000,000 = 0.1sec