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.

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.