A200 watt t. v. is used for 20 hours in a week. if it is used for four weeks then what is cost of electricity if rate is 5rs/kwh

80rs

Explanation:

you can calculate

t_total  = 20h/week * 4 weeks = 80 hours

200w = 0,2kw

cost = 5rs/kwh * 0,2kw * 80h =  80rs

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach