Compared to the total mass and total charge at the beginning of a redox reaction, the total mass and total charge upon completion of the reaction is

1. Less

2. Dependent on what the reaction is

3. Greater

3. The same

Which unit would you use to express the height of your desk?

If it has enough kinetic energy, a moleculeat the surface of the Earth can escape the Earth's gravitation. The acceleration of gravity is 9.8 m/s2, and the Boltzmanns' constant is 1.38066*10-23 J/K.

The tibia bone in the lower leg of an adult human will break if the compressive force on it exceeds about 4*105N (we assume that the ankle is pushing up). Suppose that someone step off a chair that is 0.40 m above the floor.

Apply Newton's first law to each of the following situations. In which situations can you conclude that the object is undergoing a net interaction with one or more other objects? A car travels at constant speed around a circular race track.

You are sitting on a deck of your house surrounded by oak trees. You hear the sound of an acorn hitting the deck. You wonder if an acorn will do much damage if instead of the deck it hits your head. Let the mass of the acorn be 3.5 g.

Describe the rise and fall of a basketball using the concepts of kinetic energy and potential energy

What is not a factor that affects the viscosity of magma?

While driving his 600-kg ultra-compact electric car, a distracted driver starts crossing a drawbridge. Not realizing that the drawbridge is about to open, he ends up in the river below with his car.

A police officer's radar gun emits radio waves at a frequency of 10.7 GHz10.7 GHz. What is the difference in the frequencies reflected back to the radar gun by a car traveling at the 75 mph75 mph speed limit and a car travelling 9 mph9 mph faster?

Function of a battery