involves removing the top layer of earth, mining the coal, and then replacing the earth back on the surface.

You hold a mug of hot chocolate to warm your hands. Which type of heat transfer are you demonstrating?

Jamal read a story on the Internet called "Barking Dogs Don't Bite." In the story, the main character told everyone that a dog that barks will not bite. Jamal remembered that he had been bitten the previous summer by a dog that first barked at him.

The energy of a photon that has a wavelength of 12.3 nm is

Which has a greater momentum? A 1200kg car traveling at 30m/s or a 2000kg truck traveling at 20m/s

A child sliding down the slide at a park is an example of A. positive acceleration B. negative acceleration C. no acceleration D. velocity

In a scientific experiment, the_ changes in response to another change. O O A. hypothesis B. conclusion O O O C. dependent variable O D. independent variable

How do animals affect the amount of carbon in earth's atmosphere

A 1600-kg car travels at a speed of 12.5m/s what is its kinetic energy

I'm hooke's law F=kx, what does the k stand for

The temperature of an object increases by 30.2 °c when it absorbs 3715 j of heat. calculate the heat capacity of the object.