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It requires a force to propel an object through air, because of the air resistance. Normally, if there were no air resistance and the object were being propelled on the level with no friction, a constant force would accelerate the object steadily. However, it would require a steady force to propel the object through air even without acceleration. And the faster it went the more resistance it would meet.
What else can I help you with?
What are mathematical relationship between resistance and specificconductivity constant?
Cell constant(C) = Resistance(R) X Specific Conductivity(K)
What materials are partially conductive?
conductivity is a result of free electrons meaning that they can be riped away fast and the temperature of the material. a colder material has a lower resistance and higher conductivity. materials like metallic oxides have low conductivity and materials like pure copper and aluminum have high conductivity.
Can heating devices be made by passing an electric current through a conductor of high resistance low resistance high conductivity low conductivity?
Heating is caused by current flow. Certain types of wire like tungsten emit more heat than other types. Lower resistance means higher current for a fixed voltage per Ohm's Law. So the efficiency of heating with electricity depends on the material of the conductor, the operating voltage and the resulting current. In most instances this will be a low resistance with high conductivity.
Why the resistance of semiconductors decreases when it is heated?
The conducter molecules are expanded causing a loss of conductivity resulting in resistance. also the molecules are moving more making it difficult for the current to navigate rush hour traffic.
How do you decrease air resistance?
Resitance of air varies based on: 1. Percentage content of moisture (higher the moisture, lesser the resistance) 2. Percentage content of suspended dust particles and conductivity of those suspended particles (higher the content, lesser the resistance)
How Conduct related to conduction?
Conductivity is the inverse of resistivity. (i.e. conductivity = 1/resistivity) Resistivity is the resistance per metre of material. So a material will have a resistance of its length multiplied by its resistivity. So the resistance of an object is calculated from conductivity of the material from which it is made and its length by resistance = 1 / (conductivity * length) This makes no attempt to account for capacitance or inductance, so the impedance of a material would be calculated from conductivity as well as capacitance (or inductance) per unit length.
Do different materials have the same resistance?
No, different materials have different resistance values. Resistance depends on the material's electrical properties, such as its conductivity and resistivity. For example, metals generally have low resistance due to their high conductivity, while insulators have high resistance due to their low conductivity.
Define electrical conductivity?
Conductivity is the inverse of resistance. Since Ohm's Law states that current is voltage divided by resistance, it also states that current is voltages times conductivity.
What is the impact of the flow of current through a wire on its conductivity and resistance?
The flow of current through a wire increases its conductivity and decreases its resistance.
When a material has high resistance what is low?
you can derive your answer from the equation G=1/R or R=1/G. Resistance and conductivity sitting in the opposite side from each other. Low Resistance conductivity (eg: cu) high Resistance conductivity (eg: glass) hope that helped.
What is the formula for conductivity?
1/specific resistance
What material does resistance depend on?
Resistance depends on the material's conductivity, temperature, and dimensions. Materials with high conductivity exhibit low resistance, while materials with lower conductivity exhibit higher resistance. Temperature can also affect resistance, with most materials experiencing an increase in resistance as temperature rises. Additionally, resistance is directly proportional to the length of the material and inversely proportional to its cross-sectional area.
What are mathematical relationship between resistance and specificconductivity constant?
Cell constant(C) = Resistance(R) X Specific Conductivity(K)
What are some examples of items with low conductivity?
Thermal resistance: diamond Electrical resistance: copper Optical resistance: quartz
Can you put this in terms 168.2ms for conductivity that i can understand?
Siemens is a unit of conductivity - it is the reciprocal of resistance. Mhos is also used for this measure.
What is the relation between hardness and conductivity?
Generally, materials that are harder tend to be less conductive, while materials that are softer tend to be more conductive. This is because the arrangement of atoms in harder materials makes it more difficult for electrons to move freely, leading to lower conductivity. However, there are exceptions to this general trend based on the specific properties of the material.
In which situation will the lowest resistance occur?
The lowest resistance will occur in a situation where the material has high conductivity and short length.
