Need help on chemistry

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

What state of matter is ice a. liquid b. element c. solid d. gas

Two nails have identical sizes and shapes. in one nail, 20 percent of the domains are lined up. in the other nail, 80 percent of the domains are lined up. which has stronger magnetic force? first answer gets brainliest!