20 n force moving a box to 30 meters distance. how much work id done? if it takes 10 sec to do this work, how much power is used.

Work done = 600 J

Power used = 60 W

Explanation:

Given:

Force acting on the box is,

Displacement of the box is,

Time taken for the work,

Now, we know that, work is said to be done by a force only when there is displacement caused by the force in its direction.

Here, the force acting on the box causes a displacement of 30 m in its direction. So, work done is equal to the product of force and displacement caused.

Therefore, work done on the box is given as:

Therefore, the work done is 600 J.

Now, we know that, power is given as work done per unit time.

So, power used is given as:

Therefore, the power used is 60 W.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer