Physics

Hull speed is the theoretical limit of a sail craft’s speed. It can be approximated by the following formula:

1.34 * SQRT (LWL), where LWL is the length of the waterline, in feet.

As a small vessel approaches its hull speed, the hull begins to climb its own bow wave. The faster the vessel tries to go, the more difficult climbing the bow wave becomes. Eventually, should the hull type permit it, the hull will begin to hydroplane (skimming across the water.

When you buy it in the store it is not magnetized, but if you rub it with a magnet it becomes magnetic.

Schrödinger's wave equation was based on the Heisenberg uncertainty principal that the position and velocity of a electron cannot be determined accurately (accuracy in one will sacrifice accuracy in another). Schrödinger's wave equation gave a wave function, which squared gave the probability cloud of electrons. Therefore, Schrödinger's contribution resulted in the electron cloud model of the atom.

Converting Pascal to torr

The pascal is a smaller unit of pressure than the torr. There are 133.32 Pascal per torr. Hence, divide your pressure measurement in pascal by 133.32 to convert to torr.

If your measurement is in torr to begin with, multiply it by 133.32 to convert to pascal.

Because the electric charge depends on the mass times the radius of a particle and whereas the mass of the proton is 1836 heavier than the mass of the electron, the radius of the proton is 1836 times smaller. Thus, the product of mass time’s radius is in both particles the same and therefore they have the same charge.

ntu is nothing but number of transfer units it is one of the method used to find the heat transfer of hot and cold body it is applicable to both parallel and counter flow

Airplanes have two control surfaces involved when turning, the ailerons are on the trailing edge of the wings. By moving them in opposite directions, one up one down, the plane tilts, the lift the wings are generating now causes the plane to turn instead of going up. The rudder which is vertical at the back turns the plane to the left and right, but the rudder alone can turn the plane but not change its direction (side slipping) so in order to turn correctly you must use both the rudder and the ailerons.

Someone who is exposed to x-rays too long can develop cancer, skin burns, anemia, or other serious conditions.

Tensile strength isn't really calculated; it's measured. It is defined as the point at which a sample of material fails when subjected to tensile stress. The unit of measure of tensile strength (and stress) is the Newton per square meter (N/m2), also known as the Pascal (Pa). Tensile strengths of various building materials, such as steel, are measure in millions of Pa.

when asking how it is measured, a description of how it is measured would be helpful.

First, you must know the specific gravity of the liquid then you can calculate the weight by multiplying the specific gravity by 8.34 lbs. 8.34 lbs is the weight of a gallon of water that has a specific gravity of 1.

The main applications of NMR stereoscopy are the elucidation of the carbon-hydrogen backbone of organic compounds and the determination of the relative stereochemistry of the same molecule. See the link below for more details.

it will, but probably, not and such experiment would be interesting one. Electrostatic electricity has a big potential - thousands volts - but small power when it gets discharged, that meaning the potential will subsides momentarily to null volts with the current caused very negligible. This current will make little harm to the flea which, besides. consist of very resistive substance. The current might knock over the insect, but won't kill it, I believe.

There are two possible answers to this;

a) It has no direction

b) It points in all directions

Answer a) is really truer, as the notion of a null vector precludes any notion of a direction.

If westbound, the day changes to the next day. If eastbound, the day is the day before. Seems strange, but it all works out.

Let's imagine we're on the beach in the early evening west of the dateline at 4:59 PM Tuesday. If we swim eastward across the dateline and continue east seven time zones, it will be 11:59 PM Monday. We rest from all this exercise and ponder the strangeness of turning back a day. Whew! One more minute and it will be Tuesday anyway. Continue 17 more time zones (24 totals) eastward and it will be 4:59 PM Tuesday. Just like we left it. It works just fine in the reverse going the other way.

A good candidate would be curium 247 (247Cm), which has a half-life of 1.56 × 107 years. That's 15,600,000 years (15.6 million years).

Cardiac output is the volume of blood the heart pumps within one minute. Cardiac output (CO) is equal to the stroke volume (SV) of the heart multiplied by the heart rate (HR). Thus, cardiac output is given by the equation: CO=HR X SV.

One answer is that it is in free-fall in a vacuum (to eliminate atmospheric drag).

Another answer is that it is in orbit around another body.

The object could be in inter-stellar space, essentially experiencing the balanced gravitational force of "everything".

If you eliminate the "middle of space" solution, the object would have to be in a state of acceleration.

No. Its velocity, average velocity and instantaneous velocity will all be the same at any (or every) time an investigator makes an observation.

The arrangement of atoms in solids are different from those in liquids in that they are unable to move from their location in the solid, where they can move in the liquid. A solid's atoms are vibrating very rapidly, but the molecules are all locked into place, whereas in a liquid the molecules are free to move around. Also in general the atoms of a solid are closer together than those of a liquid with the exception of water, whose solid form is less dense.

Pascal's Principle states that the pressure is transmitted evenly through a liquid. That's why when you inflate a balloon with air it expands evenly in all directions.