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Technology
The practical application of knowledge, especially in a particular area, is called technology. Advances in technology affect every area of our lives. This category is for questions about technology and includes everything from how to remove a scratch from a CD to applications of electronics to what polyester is made from and more.
35,090 Questions
Valence electrons are in the outer shell of the atom. The first column (group 1)has a +1 valence, which means that it has an extra electron it can 'lose' when bonding with other atoms. The 2nd column (group 2) has +2. The same goes for groups 3. Group 4 can gain 4 and lose 4. Group 5 can 'gain' 3 electrons, group 6 can gain 2 electrons etc.
How does an autosum formula differ from an average formula?
An autosum formula calculates the total sum of a range of cells, while an average formula calculates the average value of a range of cells. The autosum function adds up the numbers in the selected range and can be applied to any numerical data, whereas the average function calculates the arithmetic mean of the numbers in the selected range.
Air can vary in temperature, so it can be cold or hot depending on the environment. Cold air is denser and can feel refreshing, while hot air is lighter and can feel warmer on the skin.
What is a fired thrown or otherwise propelled object?
A projectile is a fired, thrown, or otherwise propelled object that is intended to hit a target. Examples of projectiles include bullets, arrows, and cannonballs.
In Australia, 500 watts is the same as anywhere else in the world. It is a unit of power measurement and would represent the same amount of power whether you are in Australia or elsewhere.
"Pencil to ink" refers to the process of creating a finalized drawing or design by transitioning from a pencil sketch to using ink for the final lines. This is a common technique used in art and illustration to add more definition and detail to the initial pencil drawing.
How you can make a oscillator without using LC?
You can create an oscillator without using LC components by using an operational amplifier (op-amp) configured as an astable multivibrator. The op-amp can generate a square wave output using resistors and capacitors to create the necessary feedback loop for oscillation. This circuit can provide a stable frequency output without the need for inductors or capacitors.
What is the MIC values of amoxicline?
The minimum inhibitory concentration (MIC) of amoxicillin can vary depending on the specific bacteria being targeted. However, typical MIC values for common bacteria range from 0.015 to 2 μg/mL. It is important to perform susceptibility testing to determine the exact MIC for a particular bacterial strain.
What is the cost of Thermosetting plastic?
The cost of thermosetting plastic can vary depending on the type, grade, quantity, and supplier. Generally, thermosetting plastics tend to be more expensive than thermoplastics due to their enhanced durability and heat resistance properties. Prices can range from a few dollars per pound to upwards of $10 or more per pound for specialty grades.
What meant by the pitch of a coil?
the pitch of a coil referes to the angle or degree at which the coils slant. in example you will have a different pitch in the thread of metric and imperial screws. also rough and fine thread. hope that helped
Why do you have to watch the levels for each track in garageband?
Watching the levels for each track in GarageBand helps ensure that the audio signal is not too loud (distorting) or too soft (indecipherable). Properly monitoring levels can help you achieve a balanced mix, prevent clipping, and maintain audio quality throughout your project.
Why the ttl change in the same ping?
The TTL (Time to Live) value in a ping packet decreases by 1 each time it passes through a router. This helps prevent packets from circulating endlessly in a network. When a TTL reaches 0, the router discards the packet and sends an ICMP Time Exceeded message.
Torque is defined as a measure of how much a force acting on an object causes that object to rotate. The object rotates about an axis, which is called the pivot point. Let the force acting on it is 'F'. The distance from the pivot point to the point where the force acts is called the moment arm, and is denoted by 'r'.
Now, torque, τ = r * F = rFsin Ѳ
Hence, torque is the cross product between the distance vector (the distance from the pivot point to the point where force is applied) and the force vector, 'a' being the angle between r and F. We are taking cross product because the variables involved are vectors. Note that the distance in this case is a vector.
What is a hotter temperature 75 mic or 125 mic?
125 degrees Celsius is hotter than 75 degrees Celsius.
What is the meaning of 399 pixel?
399 pixels refers to the number of individual points of color that make up an image or display across a width of a screen or image. The more pixels there are, the higher the resolution and clarity of the image.
How does radiation kill a man?
Additional info (Razor512):
radioactive particles damage internal structures of cells, while in most cases the cell will just die, but if radiation hits a cell while it is dividing then it will damage the genetic info in the cell and you can either end up with a non functioning cell which dies, or a cancer cell that does the wrong thing and makes you very sick.
If you look at cases such as the Chernobyl disaster, you will see cases of people having their skin fall off due to the damage caused by radioactive particles.
radiation destroys pretty much any type of biological cell and enough of it will dissolve skin and bone (and a high enough output can even eat away at metal).
What are the methods to find capacitance of a capacitor?
You could measure it with a Capacitance meter. Or you could use the formula:
In a parallel plate capacitor, capacitance is directly proportional to the surface area of the conductor plates and inversely proportional to the separation distance between the plates. If the charges on the plates are +q and −q, and V gives the voltage between the plates, then the capacitance C is given by
For further info on the total value of capacitance in series or parallel, Google it.
What is the full range of wavelength?
The full range of wavelengths in the electromagnetic spectrum extends from extremely short gamma rays with wavelengths less than 0.01 nanometers, to extremely long radio waves with wavelengths over thousands of kilometers.
Are black and white ink cheaper than color ink?
Yes, black ink is generally cheaper than color ink because it is used more frequently in printing. Color ink can be more expensive due to the additional cartridges needed to produce different colors.
Why is hydrogen more stable than oxygen in car tires?
have you ever seen videos of a hydrogen bomb that's why lol. but you don't use pure oxygen cause that's poisonous and extremely flammable you use air which is (70% nitrogen, 29% oxygen 1% etc..
How do you increase elastic limit?
To increase the elastic limit of a material, you can improve its structural properties by alloying or heat treatment. Additionally, reducing defects and impurities in the material can help enhance its elasticity. Strengthening mechanisms like solid solution strengthening or grain refinement can also boost the elastic limit.
Who first declared September 17 as constitution day and citizenship day?
Constitution Day and Citizenship Day was first declared on September 17th by Congress in 1952. This day is observed to honor the signing of the United States Constitution in 1787 and to recognize the rights and responsibilities of U.S. citizens.
How does the third rail of a subway work?
it is the power line of the train, just like the usual train have the power line in the air.
the reason to this is do to that most of the rail is under ground and to have the power in the air under the ground can be dangerus, the usual pover line over the normal tains can travel up to 1/2 meters or more. so when you are under the ground the power is direkted in another way. this is also a cheaper methode to to so, and as long as you dont ty to phas the line you wont get shoked.
it works like the other trains as a pluss.
How you can make a clamp on ammeter?
Go to radio shack. Ask for "Alligator clips". Buy a few that the tip of your ammeter probe fits snugly into the wire loop. You now have an ammeter probe with a clip on the end. Cost: ~$1
Alternatively, they sell pre-manufactured clip leads for most ammeters, which consist of a plug-in jack to the meter, a wire and an alligator clip at the other end. They're around $20.
If you mean a "clamp-on" ammeter that detects current by proximity to a hot wire, I don't know how to make one, other than the fact that they work on the principle of induction coils. Probably a multi-meter and a coil of wire would suffice to *detect* current. You'd have to calibrate readings for your specific coil with known currents to use it for a reading other than hot/not-hot. BUT: At around $30 for a cheapo clamp-on meter, you're undoubtedly better off buying one, or just learning to use a multi-meter and probing the wire. Homemade electronic devices are fun until your DIY project gets you killed trying to prox text 440V 3-phase with your jury-rigged science project...
