you burn a log on a fire. you use the fire to warm yourself and to you see to read a book. what energy transformation is taking place?

a. nuclear energy is transformed to light energy and chemical energy.
b. chemical energy is transformed to nuclear energy and heat energy.
c. chemical energy is transformed to light energy and heat energy.
d. nuclear energy is transformed to light energy and heat energy.

C.Chemical energy is transformed to light energy and heat energy.

Explanation:

Here it is given that the fire is used for two objectives

1) To warm yourself

which means we need some thermal energy so that we get the warmth from it.

2) To see to read the book

here in order read the book we required light of sufficient intensity so here we require light energy for this.

so from above requirements of energy we can say that here the energy contained in the wooden block is converted into the above forms

Also we know that energy contained in the wooden block is in the form of chemical energy so here correct answer will be

C.Chemical energy is transformed to light energy and heat energy.

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.

a skateboard rolling across the street - apex