What type of galaxy is pictured?
Irregular
Spiral
Lens
Elliptical

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

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

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted