The tinier the particle, the higher the frequency of light the particle will scatter. The atoms in the Earth's atmosphere are extremely small, which causes them to scatter more violet light than blue light because violet is of a higher frequency. Our eyes are not sensitive to violet light, but they are sensitive to blue light because of the blue cones in our eyes. The blue light becomes predominate in our vision, and we see a blue sky.

You are not harmed when lightning strikes your car because you are in a Faraday cage (unless, of course, you are in a convertible or on the back of a truck, in which case you would be fried). A Faraday cage is an enclosed compartment which allows a charge to reside on its outside. The charge of the lightning is what can harm you. The electrons from a lightning bolt mutually repel to the metal outer surface of the car. Even though the electric field on the outside of the car is great, the net electric field inside the car is zero because the opposing forces are balanced in every direction.

A submerged object appears to be closer to the surface than it actually is because of refraction. The waves of light that are directed upward at an angle toward the water surface are bent off-kilter as they speed up after emerging into the air. They speed up because the medium through which the waves are traveling changes. The waves that speed up reach the observer's eyes. The change in speed from water to air dictates the path taken by the light waves. This path turns out to be the least-time path. The person sees the fish on the same path as the light waves that reach his eyes, which makes the fish appear closer to the surface.

This is an example of conservation of angular momentum. When your arms are extended, your rotational inertia is relativly large. As you slowly turn, your angular momentum is the product of rotational inertia and rotational velocity. When you pull your arms in, the rotational inertia of your body is reduced. This causes your rotational velocity to increase, making you spin faster.

The earth is round because of gravitation. Masses attract other masses, and so the earth has attracted itself together as far as it can. All the "corners" of the earth have been pulled in. As a result, every part of the surface is equidistant form the center of gravity, which creates a sphere.

Ahhhhh! You are the root of all evil! There is no such force in a nonaccerlated reference frame.

Well, now that you understand that this is not due to the imaginary centrifugal force, I shall explain. While inertia is not a force, it is a body's natural resistance to change. In this scenario, the car's inertia is causing it to attempt to travel straight, thus resisting the curve and sliding.

The interference pattern seen, when light goes through a double slit for instance, is due to either constructive or destructive interference. If two monochromatic waves meet in phase then there is constructive interference; hence a bright spot seen in the pattern. If two monochromatic waves meet out of phase, then there is destructive interference: hence a dark spot in the pattern.

The period of a pendulum would be greater on the moon because of the greater effect of gravity. The period of a pendulum is dependent upon the formula T= (L/g)^0.5.

Escape velocity is the velocity required for an orbiting satellite to escape from the gravitational pull of the earth. This is determined by applying the formula V= (gr)^.5.

The freezing process is more pronounced in water with higher temperatures. The reason hot water cools (and thus freezes) faster than cold water is due to various properties of liquids. Hot water evaporates faster than cold water. The mass loss incurred by evaporation makes cooling occur more rapidly. The other properties are convection, dissolved gases, and conduction.

The answer is simple: mirrors do not reverse left and right. What you are really seeing is the reversal of in and out. This is easy to explain using a coordinate plane. Left and right are on the x-axis. Up and down are on the y-axis, and in and out are on the z-axis. The z-axis is where reversal of the object's image takes place.

Lightning is a huge discharge. During this discharge, large amounts of charge flows from the clouds to the earth. This flowing of a charge is caused by a potential difference of millions of volts between the clouds and the earth. Lightning rods protect tall standing structures from lightning. They have the ability to protect tall standing structures because they are grounded. The lightning rods are grounded because they provide a path to the earth. The earth is electrically neutral and can absorb the charge carried by the lightning. Lightning rods are composed of conducting materials. Lightning rods are pointed which means they have a small radius of curvature. Because the lightning rod has a non-uniform shape, the density of charge varies with the radius of curvature. The lightning rods pointed shape allows charge to leek of rapidly. Because charge leeks off rapidly, there is little to no charge to build an electric field. A small electric field or the absence of an electric field decreases the probabliltiy of lightning interaction with the structure upon which the lightning rod is located. If lightning does happen to hit the structure, there is a high probablility that it will interact with the lightning rod instead of the structure.

Another explanation is the induced magnetic field created in each loop,caused by relative motion between the magnet and the coil of wires, opposes the overall magnetic field of the magnet. The opposing of the induced magnetic fields of the coils against the magnetic field of the magnet creates the restrictive force that one might feel in this situation.