How many 100w light bulbs could be powered for one year by the direct conversion of 1g of matter into energy?

No. of 100 W bulbs, n = 28,539 bulbs

Given:

Power of a single bulb = 100 W

Time period, T = 1 yr = = 31,536,000 s

mass of matter, m = 1 g =

Solution:

According to Eintein's mass-energy equivalence:

E =

E =

E =  

Power of a single bulb, P =  

                                       P =  

                                       P = 28,53,881 W

No. of 100 W bulbs, n =

                                 n =

                                 n = 28,539

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.