A fire is burning in a fireplace. Where is the convection? A. You touch the warm bricks next to the fireplace
B. The fire heats the bricks at the bottom of the fireplace
C. Heat is rising up the chimney

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

Which of these is constant for all types of electromagnetic radiation in a vacuum? select one: a. wavelength b. frequency c. photon energy d. amplitude e. velocity