80 because if you add 50 +30 =80 so yea that why I pick 80
As we know that electrostatic force between two charges is given as
here we know that electrostatic repulsion force is balanced by the gravitational force between them
so here force of attraction due to gravitation is given as
here we can assume that both will have equal charge of magnitude "q"
now we have
now we have
Answer:
Technician B
Explanation:
This can be explained as a fuse is a protective device which blows in order to protect the circuit and the equipment from short circuiting.
Short circuit is a condition where a very heavy current flow through the line with no low line impedance which is not the intended path for the current to flow.
Thus when heavy current flows through a fuse it blows out thus disconnecting the path for the current flow.
Therefore, if a fuse burns out when switch is on, short circuit is present after the switch
Answer:
19m
Explanation:
we have proper length L = 100m
the speed of the train v = 0.95
the speed of light is given as = 3x10⁸
length of the tunnel is given as = 50 meters
we can solve for the lenght contraction as
LX√1-v²/c²
= 100 * √1-(0.95*3x10⁸)²/(3x10⁸ )
= 31.22 metres
the train would be well seen at
50 - 31.22
= 18.78
= this is approximately 19 metres
we conclude tht the trains ends clears the ends of the tunnel by 19 meters.
thank you!
C. It allows your body time to rest. Although rest also balances your work out program ♂️