Answer:
The phrases the describe the situation are A and C
Explanation:
1- If a car is at rest or uniform motion, it will remain in that condition until an external force acts on it. If the external forces acting on a body are balanced , it means that their sum is equals to 0, which eventually results that no Net force is acting on it.
For balance forces, ∑F = 0
2- If the car moving at a constant speed is slowing down, it means that the forces have become unbalanced, eventually resulting in a Net force in the opposite direction of the motion of the car, due to which it is slowing down
For unbalanced forces, ∑F ≠ 0
The question satisfies 2, which is the answer
Answer:
The charge on the droplet is .
Yes, quantization of charge is obeyed within experimental error.
Explanation:
Given that,
Radius = 1.6μm
Electric field = 46 N/C
Density of oil = 0.085 g/cm³
We need to calculate the charge on the droplet
Using formula of force
Put the value into the formula
We need to calculate the quantization of charge
Using formula of quantization
Put the value into the formula
Yes, quantization of charge is obeyed within experimental error.
Hence, The charge on the droplet is .
Yes, quantization of charge is obeyed within experimental error.
Answer:
Explanation:
As we know that when electron moved in electric field then work done by electric field must be equal to the change in kinetic energy of the electron
So here we have to find the work done by electric field on moving electron
So we have
now the distance moved by the electron is given as
so we have
now we have to convert it into keV units
so we have
Your answer is in the picture
I think the correct answer would be the last option. On a cloudless day, most of the visible light that is headed towards the Earth would reach the surface wherein some is being reflected and some is being absorbed. During this time, there are no hindrances for the light so it directly reaches the surface of the Earth and is absorbed or reflected by the objects it hits.