20. What factor is more important in determining electrical force

21. Why do we need constants like k and G?

Grape juice solid-conduction, solid-convection, fluid-conduction, fluid-convection

Mr. hitch taught us about sedimentary, metamorphic, and igneous rocks. He describes how they were formed, what they contain, and showed us samples, and showed us samples of each. he is a good A astronomer B meteorologist C geologist D oceanographer

Which of the following elements is not an insulator? Silicon Calcium Boron Iodine

Why did one liter of have a greater mass than the other liter prepared by a different method

Suppose you wind a wire with a current into a coil. How have you changed the wire's magnetic field?

An object has a mass of 8.00 kg. What is the gravitational force on the object by the earth?

Which of the following best characterizes the free energy change ΔG for an endothermic reaction under physiological conditions? A. The sign of ΔG is positive B. The sign of ΔG is zero C. The sign of ΔG is negative D.

In a recent hockey game, one player (m=100kg) was moving at a velocity of 8 m/s when he ran into another player (m=300kg) who was at rest (v=0m/s). After the collision, the two players were stuck together (moving with the same velocity).

In a laser, electrical energy is changed to light energy, and a small amount of the energy is wasted as heat. Describe the total amount of the heat in the system (using the conservation of energy).

What is the name for a star and planets held together by gravity? A. solar system B. galaxy C. black hole D. supernova