Solid State Physics

No, it is only refracted at each clear air to glass surface, even if the refractive index of the glass changes.

If an air to glass lens is vacuum coated with a fluoride film, it impoves the tranmision of light through the lens, e.g. the front lens of a telescope. The film can improve the tranmission of light by one half of a wave length. This trechnolgy was used by the British Navy during WW2 against the German warship the Graff Spay and others. The British vessels were able to see the enemy before they could be seen and were able to fire the first shots.

We need 1 more piece of information, the size of the window. I will be treating the window as 1 m tall. So the window is 2.5 meters off the throwing plane (the bottom of the window) to 3.5 meters off the throwing plane (top of the window).

I am also assuming that the window's height is based on how high it is above the throwing plane of your arm (if that is the height off the ground, we also need to know how tall you are).

The rock will hit 2.676 meters above the throwing plane so it will hit the bottom portion of the window (as seeing as the window goes from 2.5 meters to 3.5 meters).

To find the horizontal displacement of the ball, you can use the equation of motion in the horizontal direction, which is given by: horizontal displacement = initial velocity * time * cos(angle). Given the initial velocity is 25.0 m/s and the angle is 35 degrees, the horizontal displacement can be calculated once the time of flight is known.

Heat cause excitation of electrons and molecular vibration. More heat is the more molecular vibration and at the certain point when the energy in molecular vibration exceed the bonding energy, the molecules or atom then set free from the solid bonding and move freely. In absent of atmospheric pressure, the solid would become gas but with the pressure or presence of other gases, the matter may be mobile yet held together in liquid state. The liquid, with more heat, the energy from molecular excitation would set such liquid to become gas.

1. some first generation computers used germanium point contact diodes in their logic gates to reduce their vacuum tube parts count.
2. second generation computers used discrete germanium or silicon transistors.
3. third generation and later computers use silicon integrated circuits.

Gordon Moore observed in the early 1960s that the number of transistors that could be successfully integrated on a single integrated circuit chip was growing at an exponential rate over time. He then quantified this observation into an equation. This equation has come to be called "Moore's Law" and the growth in the number of transistors in a single integrated circuit chip has continued to follow that equation since then (even though many potential problems that could have stalled the growth have come and gone).

No You are thinking of the Dead Sea

The time it takes for the cat to hit the floor can be calculated using the equation: time = square root of (2 * height / gravity), where height is 1.75 m and gravity is approximately 9.8 m/s^2. Plugging in the values, the time it takes for the cat to hit the floor would be approximately 0.58 seconds.

2100mAh battery will last longer due to higher capacity; probably for nearly 50% longer.

The shape of the surface of a column of water actually depends on what the sides of the container are made of, but for a glass tube the surface is concave. This is because water likes to wet the glass. Some materials, such as teflon, water does not like to wet. On a teflon surface, water will form little beads and does not like to stick. A water column in a teflon tube would have a convex surface.

This is because the wet glass has less surface energy than the dry glass. Since the universe always likes to reduce the total energy of a system, the water rises up the sides to make more wet surface and reduce the total energy. With a teflon surface, the dry surface has less energy and so the water is "repelled" from the surface.

obsidian

GaAs has high mobility compare to Si

explain tunnel effect

An intrinsic semiconductor is basically a pure semiconductor, though some might argue that a small amount of doping can still yield an intrinsic semiconductor. In the crystal structure of this material, there are very few electrons crossing the band gap into the conduction band, and this stuff doesn't want to conduct much current. But as temperature increases, more electron-hole pairs will appear as electrons jump that band gap and take up places in the conduction band. And if you guessed that increasing temperature will permit the intrinsic semiconductor to conduct current flow a bit better, you'd be right. The intrinsic semiconductor has a positive temperature coefficient. More heat, more conduction under the same conditions.

There are two different kinds of particles (electrons, protons, neutrons, atoms, molecules). Each such particle has a so called "spin" which is quantum mechanical value. Depending on spin particles behave differently in the same conditions and can be described using two different distributions. First one is Bose-Einstein distribution for particles with integer spin. Second on is Fermi-Dirac distribution for particles with spin n/2 (where n is an integer number which can take values starting from 1 and higher).

you mean will it not squish under load? I would say so, it takes alot of force to squash a can (about 20kg+) and Im sure a block like this weighs alot less.

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if a strong magnetic field is applied, the molecular magnets set themselves with their lengths almost parallel to it. thus when the resultant magnetic effect is weak,the process is called paramagnetism

paramagnetism is foung in aluminium,manganese and platinum.

Yes. Newtons three laws of physics apply to everything in our universe. Only when you study molecular structure and the early formation of the universe do you have to use Einstein's Theories.

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A ping pong ball rolls for a longer time in air due to its low mass and high surface area, which results in less air resistance compared to heavier or more aerodynamic objects. This lower air resistance allows the ball to maintain its speed and momentum for a longer period before coming to a stop.

A wheel and axle is a simple machine. But it has another simple machine enet.

Which one is it? A lever