Answer:
Solution for 3 different cases are given in explanation.
Explanation:
Gauss's Law:
for :
for :
for :
Explanation:
Given that,
Initial speed of the sports car, u = 80 km/h = 22.22 m/s
Final speed of the runner, v = 0
Distance covered by the sports car, d = 80 km = 80000 m
Let a is the acceleration of the sports car. It can be calculated using third equation of motion as :
Value of g,
Hence, this is required solution.
Answer:
Explanation:
Given that,
Magnetic force acting on an electron,
The magnitude of the magnetic field,
We need to find the magnitude of the velocity. We know that the magnetic force is given by :
Where
v is the velocity
So,
So, the magnitude of velocity is.
Answer:
Explanation:
One charge is situated at x = 1.95 m . Second charge is situated at y = 1.00 m
These two charges are situated outside sphere as it has radius of .365 m with center at origin. So charge inside sphere = zero.
Applying Gauss's theorem
Flux through spherical surface = charge inside sphere / ε₀
= 0 / ε₀
= 0 Ans .
Answer:
Refractive index is 1.43
Explanation:
We are given;
- The speed of light through a material as 2.1 × 10^8 m/s
We are required to determine the refractive index of the material.
- We need to know refractive index may be given by the formula;
- Refractive index = Speed of light in air ÷ speed of light in a material
The speed of light in air is 3.0 × 10^8 m/s
Therefore;
Refractive index = 3.0 × 10^8 m/s ÷ 2.1 × 10^8 m/s
= 1.4286
= 1.43
Thus, the refractive index of the material is 1.43