Answer: When a car is struck by lightning, the resulting electric field inside the car is zero.
Explanation:
Answer:
It is b
Explanation:
It’s not a the other comment is wrong.
Answer:
v = 7121.3 m/s
Explanation:
As we know that the centripetal force for the space shuttle is due to gravitational force of earth due to which it will rotate in circular path with constant speed
so here we will have
![\frac{mv^2}{r} = \frac{GMm}{r^2}](https://tex.z-dn.net/?f=%5Cfrac%7Bmv%5E2%7D%7Br%7D%20%3D%20%5Cfrac%7BGMm%7D%7Br%5E2%7D)
here we know that
r = orbital radius = 6370 km + 1482 km
![r = 7.852 \times 10^6 m](https://tex.z-dn.net/?f=r%20%3D%207.852%20%5Ctimes%2010%5E6%20m)
also we know that
![M = 5.97 \times 10^{24} kg](https://tex.z-dn.net/?f=M%20%3D%205.97%20%5Ctimes%2010%5E%7B24%7D%20kg)
now we will have
![v^2 = \frac{(6.67 \times 10^{-11})(5.97 \times 10^{24})}{7.852 \times 10^6}](https://tex.z-dn.net/?f=v%5E2%20%3D%20%5Cfrac%7B%286.67%20%5Ctimes%2010%5E%7B-11%7D%29%285.97%20%5Ctimes%2010%5E%7B24%7D%29%7D%7B7.852%20%5Ctimes%2010%5E6%7D)
![v^2 = 5.07 \times 10^7](https://tex.z-dn.net/?f=v%5E2%20%3D%205.07%20%5Ctimes%2010%5E7)
![v = 7121.3 m/s](https://tex.z-dn.net/?f=v%20%3D%207121.3%20m%2Fs)
Answer:
displacement= 30 m towards south, distance= 210m
Explanation:
Distance (scalar quantity) how much ground an object has covered.
Displacement (vector quantity) refers to how far out of place an object is it is the object's overall change in position.
Basically meaning for displacement the directions will be very key
D for Displacement
D= D1+D2
D= 120 (S) + 90 m (N)
Must be in same direction
D= 120 (S) + (-90 m) (S)
D= 30 m (S)
and for distance you are simply just adding how much distance they have covered
so d= d1+d2
d= 90m + 120m
d= 210m
Here it is. I used the surface charge density σ as q/Area, and then wrote it out in terms of q at the end