three objects having the same mass begin at the same height, and all move down the same vertical distance h. one falls straight down, one slides down a frictionless inclined plane, and one swings on the end of of a string.

By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases by 40%.

Snakes, dogs, and humans have a vertebral column. snakes and dogs have tails, and humans have vestigial tailbones. dogs and humans have limbs, but snakes do not. most reptiles lay eggs, but a few give birth to live young. what do these structures suggest about the evolutionary pattern between the three organisms? 1. snakes and dogs are more closely related than snakes and humans. 2. snakes and humans are more closely related than humans and dogs. 3. dogs and humans are more closely related than snakes and humans. 4. dogs, snakes, and humans share a common ancestor. 5. the early ancestor of snakes and dogs is the same, and the early ancestor of humans is different.

Why are gold and platinum used for jewelry