Objects dropped straight or thrown horizontally from the same height
change their vertical velocity at the same rate, and fall through equal
vertical distances in equal time intervals.
The statement is false.
Answer:
I think it is A. electrical.
Explanation:
I believe it is A, because most people today have phones and IOT use a phone, it has to be charged, and IOT charge a phone you have to use an outlet which uses electrical energy.
Weight changes due to the gravitational pull in mars,basically gravity
Answer:
Explanation:
Given
mass of rod is M
Distance between rails is L
If the direction of magnetic field is directed upwards
If rod is moving right then,
Area enclosed is increasing therefore a Clockwise current will induce
and if rod is moving left then enclosed area is decreasing therefore an anticlockwise current will setup in the circuit
(b)Induced EMF will be
where v=velocity of rod
and current is
(c)Force necessary to move rod with constant velocity v is
Answer:
The net charge uniformly distributes itself on the sphere's inner and outer surfaces.
Explanation:
In electrostatic condition The charge will be distributed over the surface of the shell,
The electic field outside the sphere is like the charge where concentrated in the center of the sphere, inside the sphere the electric field is cero (quivalent to say the potencial is constant, non electric current flow) If the thickness of the shell is very very thin we just have a charged layer. To keep the above mentioned electrostatic condition the elecrtic field have to be cero in this region too