Answer:
A current can be induced in a conducting loop if it is exposed to a changing magnetic field. ... In other words, if the applied magnetic field is increasing, the current in the wire will flow in such a way that the magnetic field that it generates around the wire will decrease the applied magnetic field.
Explanation:
One double bond consists 4 electrons, so 2 double bonds means 8 electrons
Answer:
Diana's speed relative to ground is <u>16 km/h</u> in the direction of motion of train.
Explanation:
Given:
Velocity of train in forward direction is, 
Here, 
Velocity of Diana relative to train in the backward direction is, 
Negative sign implies backward motion or motion opposite to the direction of train's motion. Here, Diana is walking from front of train to back. So, Diana is moving in the opposite direction.
Now, we know that, for two bodies 'A' and 'B', velocity of 'A' relative to ground is given as:

Therefore, velocity of Diana relative to ground is given as:



So, Diana's speed relative to ground is 16 km/h in the direction of motion of train.
Answer: 2.70 cm
Given:
Density, 
Mass, m=184 g
Formula Used:
Volume, V = density/mass
where a is the side of the cube

hence, the length of one side of silver cube is 2.70 cm