Mechanical Engineering

The medal was created in 1969, designed by Congress for "any astronaut who in the performance of his duties has distinguished himself by exceptionally meritorious efforts and contributions to the welfare of the Nation and mankind."

Certain hammers are made ot of steel, I don't know names so i cannot give you an example. All I know is my dad is a joiner and he works with loads of different types of hammers and very few are steel!

Electricity has the ability to arc or jump up to almost 20 feet. When power lines have a high amount of voltage running through them, and the humidity is high, the electricity can arc even more that 20 feet.

See the related link for pictures of catapults and explanations.

Blind tapping is an attachment provision recessed in the retainer, closed at the bottom to prevent air loss. A bolt or shoulder stud may be inserted to attach the air spring to machinery. Posted by HighschoolPsybermew

I had the same question and the only answer I could find was this: To raise the temperature of 1 LB of water from 40 ºF to 41 ºF would take 1 BTU To raise the temperature of 1 LB of water from 177 ºF to 178 ºF would also take 1 BTU However, if you tried raising the temperature of water from 212 ºF to 213 ºF you would not be able to do it. Water boils at 212 ºF and would prefer to change into a gas rather than let you get it any hotter. Something of utmost importance occurs at the boiling point of a substance. If you did a little experiment and added 1 BTU of heat at a time to 1 LB of water, you would notice that the water temperature would increase by 1 degree Fahrenheit each time. That is until you reached 212 ºF Then something changes. You would keep adding BTU's, but the water would not get any hotter! It would change state into a gas and it would take 970 BTU's to vapourize that entire pound of water. This is called the Latent Heat of Vapourization and in the case of water it is 970 BTU's per pound.

Bevel gears can change the speed and motion and Worm gears can reduce speed and direction of motion.

voloute convord the pressure into volicity and the mixtur of propallere and impeller is called turbine pump

The volute of a centrifugal pump is the tank that holds the liquid being pumped. The centrifugal pump is a type of pump that uses a swirling motion to pump liquid.

They height y of the projectile is given by the function y = vosin(0)t + 1/2gt2, where vo is the initial velocity of the projectile, 0 is the firing angle, t is the time, and g is the acceleration of gravity (-9.81m/s2). The range x of the projectile is given by the function x = vocos(0)t. Rearranging this last equation for time yeilds t = x/(vocos(0)); this will give us the length of time the projectile takes to reach the target. Substituting this into the first equation yeilds:

y = vosin(0)[x/(vocos(0))] + 1/2g[x/(vocos(0))]2

this can be simplified further but it is not necessary to do so; plugging it the x and y coordinates, the initial velocity, and the acceleration of gravity, you should be able to solve for 0, which is now the only unknown.

copper & steel

Temperature monitoring refers to the process of observing an recording temperature over a specific period. This is commonly done using the temperature data logger.

An impeller is a rotor inside a pump through which the liquid flows to create a pressure gradient.
A propeller is used to propel a vessel.
In pump impeller liquid moves i.e. pump is stationary. In a vessel propeller the vessel moves through a liquid or gas!


@ please iwant to know the physical meaning of NPSH
Net Positive Suction Head

The mathematical symbol for shear is the greek letter tau - which is similar to the English letter "t". Shear stress is given in Pascals or Megapascals, as this denotes pressure - force over an area - which then leads to the applied shearing load.

Inorganic elements of biological materials are components that are not naturally produced. This is often used to reference molecules in chemistry that are synthetic or man made.

A damper is usually a piece of metal that is installed in a duct to allow the airflow to be restricted. This lets the user open or close the restriction to adjust the amount of air getting through. There is often a metal tab handle outside the duct to rotate the damper inside the duct. The handle is parallel to the restriction plate, so the least resistance is when the handle is parallel to the duct itself. To restrict the airflow, turn the handle so that it is up to 90 degrees off from the direction of the duct.

Noble metals and precious metals can be the same thing. Noble metals are known for their usefulness in the industrial fields. They resist corrosion and oxidation. Precious metals fit this description, but are also aesthetically appealing and desirable, giving them value outside the manufacturing realm.

These machines can rough machine both sides, at the same time, of a blank to "near finish" or "finish size" on the thickness of a blank. This cuts the time spent finish machining on a more expensive CNC machining center to perform the more complex machining characteristics of the part. Unfortunately, this increases handling time, setup time, and adds another move and probably another storage point to the process.

to make it easier to make fabric, would you like to sit around all day and weave each individual thread into a SMALL square of fabric?

Air can cause a very unsafe rise in pressure as air can be compressed as opposed to water thus the rational for a T&P valve.

A two by four can support a load up to 400 pounds. The length of a two by four will change the weight it can support.

Homer used the formula s=1/2at^2 where s is the altitude, a is the gravitational acceleration constant or 32 and t is the time it took for the rocket to land on its descending point.

They used 14 seconds--this datum was taken from AUK 12's records since AUK 13 and AUK 12's record are almost the same.

and then they solve it to know the altitude.

Once you know the altitude--you can now solve for the distance to locate the rocket's DESCENDING POINT... or simply where the rocket fall. Use trigonometry in solving it given that you have 90 degrees.

u all suck