Solid State Physics

It's possible for an object to have velocity equals to zero at some moment and to have some acceleration (when you throw a baseball upwards with the gravitation present, the ball reaches its maximum point and then starts to come back at its maximum height its velocity is zero while acceleration equals g).

No, drinking from a glass without friction would be impossible because you need friction to control the glass and bring it to your mouth. Without friction, the glass would slip from your hands or not be able to be brought to your mouth in a controlled manner.

Time for the object or person in question stops. This does not affect the objects around which aren't travelling at that speed or the region of spacetime which is around them. A simple and possible explanation is that time is stopped for the photon, but this stays unnoticed because we are not moving at that speed and so we cannot say what is happening to the photon.

cotton balls are a good insulator because they contain many air filled spaces, the tiny pockets trap air in the cotton balls preventing energy from being transferred. So there is less heat transfer.

The aluminum that you find in stores/products is generally a alloy composed of different metal elements. This is done in order to make it more corrosion resistant and more powerful in strength. The element Aluminum on the periodic table however is pure and is an element.

A sphere is a three-dimensional shape with one surface.

Or:

An irregular blob, an ellipsoid, a torus, plus other shapes.

The most interesting 3D object with only one side is of course the Moebus strip.

you have to measure the distance and angles between the main point and the surrounding pattern from the diffraction you create. Each crystal has its own structure (BCC, FCC, HCP, etc...) and each element in the crystal structure determines the lattice spacing....

True, the forces between particles in a solid, such as intermolecular forces or atomic bonding, help to hold the particles in a fixed position relative to each other, preventing them from changing position easily without external force.

Yes, the Universal Law of Gravitation states that any two objects in the universe with mass will exert a gravitational force on each other. The strength of the force is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Zener diodes are heavily doped to create a narrow depletion region, allowing them to operate in the reverse breakdown region where they exhibit the Zener effect. This effect causes the diode to conduct in reverse bias at a specific voltage, ideal for voltage regulation applications.

No. They never traveled at the speed of light,

and have always appeared tired.

You as a person can not bend time. There are ways to slow down time for you though.

One way is by moving toward an object that has a large gravitational pull, like a black hole. If there was some way that you could get into a spaceship, fly next to a back hole and stay around it for a period of time (without getting sucked into it) your "clock" or "time" would slow down, sending you into the future.

So lets say you got into a spaceship with a watch that read 10:00 and gave your friend a watch that was exactly synced to it. If you flew close black hole and stayed there for a period of time (lets say 10 of your minutes) and then came back to earth, your clock would read 10:10. But because the gravity around you was greatly increased, your clock would be slower than the one that you gave to your friend, which might read 10:20. It would all depend on the amount of time you were around the increase of gravity and how close you were to it.

Summing this up, if you were somehow exposed to an object with a huge amount of gravity, you would be able to go back in time.

The mass of both solute and solvent are conserved (sugar water weighs the same as the sugar plus the water), the volume of the solution increases less than the dry volume of the sugar, so the density of the solution is higher than water.

Copper(2)oxide is written as Cu2O.Not that the last alphabet is O for oxygen,not 0 for zero

Actually Copper (II) Oxide is written as CuO, because Copper 2 has the charge 2+ and Oxygen has the charge 2-, so they balance each other out evenly. THere is no need for 2 (Cu2)'s.

1. electromagnetic - long range, either attractive or repulsive, moderate
2. weak nuclear - short range, either attractive or repulsive, weak
3. strong nuclear - very short range, either attractive or repulsive, very strong
4. gravity - long range, always attractive, very weak

When an object is submerged in water, it displaces an amount of water equivalent to its own volume. This creates an upward buoyant force that counteracts the force of gravity acting on the object, making it feel lighter. As a result, the object appears to lose weight when submerged in water.

Light cannot travel around the Earth, since light travels at a straight line and the Earth is round.

The speed of light is 300,000 kilometers per second.

No, it is not possible for any object or signal to travel faster than the speed of light according to the laws of physics as described by Einstein's theory of relativity. Any object that appears to be moving faster than the speed of light is a violation of the laws of physics.

The earliest citation given in the Oxford English Dictionary for any word used as a name for this element is alumium, which British chemist and inventor Humphry Davy employed in 1808 for the metal he was trying to isolate electrolytically from the mineral alumina. The citation is from his journal Philosophical Transactions: "Had I been so fortunate as..to have procured the metallic substances I was in search of, I should have proposed for them the names of silicium, alumium, zirconium, and glucium."

Winds range can range from 65mph to over 300mph.

Most tornadoes are rated EF0 with estimated winds of 65mph to 85 mph.

The greatest damage comes from EF3 and stronger tornadoes with winds over 135 mph.

Few than 1 tornado in every thousand is rated EF5, with winds over 200 mph.

Yes, turpentine does expand.

In fact, it expands more than oil, water and benzene!

The first (or smallest measurement) you would see is the hash marking millimeters, which is written as "mm". 1mm equals the thickness of a dime. The unit of measure that is most often displayed on a metric ruler would be centimeters written "cm". 10mm equals 1cm and 2.5cm is about equal to 1 inch. Centimeters are displayed for viewing like inches are, marked on the ruler in increments of 1, 2, 3, 4... and so on. Usually to 30cm which is slightly less than 12 inches

Mercury is used in barometers because it has a high density, does not evaporate easily, and has a low thermal expansion. These properties make it ideal for creating a precise and stable measurement of atmospheric pressure. Water, in contrast, would evaporate easily and change density with temperature, making it less reliable for this purpose.

Silver is a very good conductor of electricity due to its high electrical conductivity. It is commonly used in electrical wires and circuits for this reason.

Gravitational force (weight), pointing down.

Reaction force, equal to the gravitational force (weight), exerted by the tabletop, pointing up.