# Set the Multimeter to measure a large resistance # Connect the leads of the meter to the resistance to be measured # If the readout is below useful scale switch to measure a lower resistance # If the readout is above useful scale switch to measure a higher resistance # Disconnect the leads # Turn off the multimeter
It is useful to stop aircrafts when they land as air brakes and parachutes are used to stop the aircrafts
it cuts down air resistance.
It can slow you down because it is a frictional force
Ohm's Law relates Voltage, Current, and Resistance. The equation is Voltage = Current times Resistance. Knowing any two, you can figure out the third, and that is one of the principles of basic circuit analysis.
Their task is to make the voltage flowing in a circuit drops to a desired value, depending on the resistance of the resistor.
It keeps every slight wind from becoming a hurricane and it slows down bullets. :)
Batteries are rated as ampere/hour any circuit that draws power from it effects it. The lower the internal resistance of the circuit the shorter the useful battery life as discharged.
Aluminum is useful in the aerospace industry because of its relatively high strength to weight ratio, fair corrosion resistance, and because it is generally easy to machine.
To load a circuit to a specific resistance value. This is useful in impedance matching networks, power transmission, telecommunications, etc.
A Spring is useful in "storing" energy. It is also useful to provide a "measured resistance" to counter-act an opposing force or energy. Or to determine "mass", or gravity expressed as newtons , or plain old lbs or weight. A spring can be useful in many ways. It can reduce shock to components ,vehicles and even bldg's.
The filament in a light bulb causes the light bulb to heat up and give off life.
An example: zircaloy-2 alloy for cladding nuclear fuels elements. Advantages: resistance to corrosion, resistance to stress corrosion cracking, resistance to high pressures and temperatures, not important absoptions of thermal neutrons etc. Another example: gold alloys with copper for jewelry. Advantages: more mechanical resistance, less expensive, less erosion.
Examples of useful properties: hardness, resistance to corrosion, high thermal conductivity, high electrical conductivity, ductility, maleability, high melting point, easy machining, possibilty to form alloys, insolubility in water, etc.
No, not all mutations are harmful some of them could be very useful for the indiviual or species like the aqquired resistance of some bacteria to DDT C14H9Cl5.
Gold is a very useful metal. It doesn't corrode, it solders easily, and it can be made into a layer so thin that it is transparent, but still conducts electricity. It is often used in microwave cavity devices due to it's corrosion resistance and low electrical resistance.
It keeps the electron flow in check. Wthout resistance, current flow, (or amperage), would be too excessive and hard to control. Think what would happen if you placed a metal wire from one post of a car battery to the other post (a direct short with no resistance). The wire would melt and overheat and also possibly damage the battery from excessive amperage flow.
Bands used in exercise provide resistance similar to that of weight machines. However, the resistance is constant, meaning that you'll get more of a workout through the same amount of time, as well as strengthening stability muscles which will increase coordination. Resistance bands are also more portable, easier to store, and much less expensive than traditional weight machines or gym memberships.
A plasmid is a small, circular, double-stranded DNA molecule that is distinct from a cell's chromosomal DNA. Plasmids naturally exist in bacterial cells, and they also occur in some eukaryotes. Often, the genes carried in plasmids provide bacteria with genetic advantages, such as antibiotic resistance.
- hardness- chemical resistance- high melting point
"An ohmmeter is an electrical instrument that measures electrical resistance, the opposition to an electric current."The unit of measurement for resistance is ohms (Ω).It is useful device for rapid measurement of resistance. It is consist of galvanometer and adjustable resistance Rs of known value and a cell connected in series. The resistance R to be measured is connected between the terminals.The series resistance Rs is so adjusted that when the terminals are short circuited i.e., when R = 0, the galvanometer gives full scale deflection. So the extreme graduation of the usual scale the galvanometer is marked 0 for resistance measurement. When terminals are not joined no current passes through the galvanometer and its deflection will be zero . Thus zero of the scale marked as infinity. . When R is not infinite , the galvanometer deflects to some intermediate point depending on the value of R scale can be calibrated to read the resistance directly.
B - Dynamic resistance