In Medicine, "etiology" means the origin or cause of a disease.
Similar to Hippocrates, modern scientists who study etiology believe that diseases come from natural causes such as bites from infected insects.
Answer:
because the wavelength of electron beams is much shorter than the wavelength of visible light
The amplitudes are subtracting which is when one has a peak (high point) and one has a trough (low point) This cancellation is called destructive interference
The resistance of 2.5 m wire is 0.18 ohm.
Answer:
Option C.
Explanation:
Resistance is the measure of obstacle given to the flow of currrent. As per ohm's law, resistance is the constant of proportionality between voltage and current. But the resistance of each circuit depends upon the nature of resistor used in that circuit.
R =
So the resistance depends upon the resistivity of the material, length of the material and inversely proportional to the cross sectional area of the material.
In this case, the length of the wire is varied and the composition and cross section is kept constant. From the formula, it can be seen that resistance is directly proportional to the length of the resistor. So if the wire acting as resistor undergoes a decrease in length from 100 m to 2.5 m then there will be decrease in the resistance of the wire also.
Let be the resistance of 100 m wire and be the resistance of 2.5 m wire.
Then, , remaining all parameters will get canceled out due to the usage of same wire with same cross sectional area.
So,
So the resistance of 2.5 m wire is 0.18 ohm.
Answer:
Centripetal acceleration
Explanation:
Centripetal force tends to keep an object moving within a circular or curved path to maintain its course while centripetal acceleration is what tends to accelerate the object towards the centre of the curve or circle