Ascientific theory states that the universe is expanding. which of these statements is correct about this theory?

it is a fact which cannot change over time.

it is strengthened by data which is always contradictory.

it will become a law if it is supported by scientific evidence.

it is a well supported explanation which cannot become a law.

What is a possible result of higher air temperature caused by global warming

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?