Question

How much will it take to do a work of 190J with 15w power

Answer 1

`\bf \underline{ \underline{given : }}`

• Work = 190 J

• Power = 15 W

`\bf \underline{ \underline{To \: be \: calculated : }}`

Calculate the time ?

`\bf \underline{ \underline{</p><p>Formula \: applied :}}`

`\boxed{ \bf{Power = (Work \: done)/(Time) }}`

`\bf \underline{ \underline{Solution : }}`

We know,

`\sf {Power = (Work \: done)/(Time)}`

`\sf{ Time = (Work \: done)/(Power ) }`

Substituting the values of work and power, we get:

`\sf \implies{Time = (190)/(15) }`

`\sf\implies{Time = 12.66 \: s}`

Thus,the time taken by a body is 12.66 seconds.

Answer 2

`\Huge \boxed{\mathrm{12.67 \ s}}`

Explanation:

`\displaystyle power \ (W) = (work \ done \ (J))/(time \ (s))`

`\displaystyle P= (W)/(t)`

`\displaystyle 15= (190)/(t)`

Solve for t.

Multiply both sides by t.

`15t =190`

Divide both sides by 15.

`\displaystyle t= (190)/(15)`

`t \approx 12.67`