Answer:
The Electric field will be 225.92 N/C
Explanation:
Given :
- Radius of the hollow sphere R=42.8 cm
- Initial charge on the conducting sphere is
- Magnitude of the point charge
We know that the flux of the electric field through a close surface cab be calculated by using Gauss Law which is
Hence the Electric Field is calculated.
The answer founded out by you seems to be correct and very close to the exact answer and the concept you have used in your answer is also correct.
Answer:
The best easy to make magnrets is by heating it
Answer:
A) 50 seconds
B) 200 m
Explanation:
They are 500 metres apart.
And one of the bike loves at 6 m/s while the other loves at 4 m/s.
A) Let distance of the 6 m/s bike before they meet be x.
Thus, time = x/6
Since time = distance/speed
For the second bike at 4 m/s, his distance covered before they meet will be 500 - x
Thus, time = (500 - x)/4
Now they will meet each other at the same time. Thus;
x/6 = (500 - x)/4
Cross multiply to get;
4x = 3000 - 6x
6x + 4x = 3000
10x = 3000
x = 3000/10
x = 300 m
Thus, time will be;
t = 300/6
t = 50 seconds
B) Distance covered by the slower bike is (500 - x)
Since from a above, x = 300
Thus; distance = 500 - 300 = 200 m
Answer: Convection
Explanation: convection is the most present process in the refrigeration equipment you may deal with. It occurs mainly in the fluids
