Energy from a battery powers an electromagnet Which of the following energy transformations takes place?
a
magnetic to heat
b magnetic to electrical
С
electrical to magnetic
d light to sound

Let v1, v2, w be three linearly independent vectors in r 3 . that is, they do not all lie on the same plane. for each of the following (infinite) set of vectors, carefully sketch it in r 3 , and determine whether or not it is a vector space (i. e., a subspace of r 3 ). explain your reasoning

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical

Am i correct on these two physics questions?