Which substance is classified as a nonrenewable resource.
1.paper
2. solar energy
3. natural gas
4. water

A1000-kg weather rocket is launched straight up. the rocket motor provides a constant acceleration for 16-s, then the motor stops. the rocket altitude 20-s after launch is 510-m. you can ignore any effects of air resistance. a. what was the rocket’s acceleration during the first 16-s? b. what is the rocket’s speed as it passes through a cloud 5100-m above the ground?

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?