Answer:
Speed of the electron will be
Explanation:
We have given that charge on electron
Mass of electron
Potential difference =
Now according to energy conservation
Explanation:
The weight of an object on the surface of the earth is equal to the gravitational force exerted by the earth on the object.
which gives us an expression for the acceleration due to gravity <em>g</em> as
At a height h = R, the radius of a satellite's orbit is 2R. Then the acceleration due to gravity at this height is
Simplifying this, we get
Answer: The answer is A
Explanation: The bumper is the first part of an automobile to be impacted when in a head-on accident
Information provided:
Length of wire, L = 320 m
Current through the wire, I = 120 Amps
Earth's magnetic field acting on the wire, B = 5.0*10^-5 T
Angle at which the magnetic field acts, Ф = 60°
By definition;
Force on the wire, F = LBI Sin Ф
Substituting;
F = 320*5*10^-5*120*Sin 60 = 1.663 N
Running and stopping without slipping and cars accelereating