Why is flammability a chemical property?

The fossil record suggests that the first animals to evolve lived A.) in the air B.) in swamps C.) on land D.) in the sea

Which statement best describes an insulator?

4. Heat is added to an ideal gas and the gas expands. In such a process the temperature

What is the charge of a newly formed oxygen ion

an electric motor lifts an elevator that weighs 1200N a distance of 9m in 15s, what is the power of the motor in watts?

Since there are no aurora observed on Venus we can conclude that Venus a. lacks atmospheric oxygen b. is too hot for magnetic forces. c. lacks a strong magnetic field. d. lacks strong winds.

A grocery shopper tosses a (n) 9.1 kg bag of rice into a stationary 19.3 kg grocery cart. The bag hits the cart with a horizontal speed of 6.6 m/s toward the front of the cart. What is the final speed of the cart and bag? Answer in units of m/s.

Where do most metamorphic rocks processes take place?

A 13,500 kg railroad freight car travels on a level track at a speed of 4.5 m/s. It collided and coupled with a 25,000 kg second car, initially at rest and with brakes released. What is the speed of the two cars after collision

What type of waves move energy forward, but the source makes up and down