Its when both sides of a system are at the same temp. for example (sorry is this is a bad example) one of your hand was really cold and one was really hot from running it under hot water and you clamp your hands together the molecules in the hot hand (which are moving much faster due to the heat, will start bumping into the slow moving molecules in the cold hand, until it all balances out and both hands are the same temperature.
I hope the helps :)
Answer:
A
Explanation:
Vibrations will always increase amplitude
The mass is moving by uniformly accelerated motion, with initial velocity

and acceleration

. Its position at time t is given by the following law:

where we take the initial position

since we are only interested in the distance traveled by the mass.
If we put

into the equation, the corresponding time t is the time it takes for the mass to travel this distance:


And the two solutions for the equation are:

--> negative, we can discard it

--> this is the solution to our problem
Answer:
other part will move with momentum 0.5 kg m/s towards west
Explanation:
As we know that the during the explosion event the time interval is very small and there is no impulsive force on the firecracker during this time
so here we can say that the momentum will remains conserved during the this event
now if the initial momentum of the firecracker is zero
then the final momentum must be zero
so here we can say

towards east
now from above equation

so the other part will move with momentum 0.5 kg m/s towards west
Answer:
The induced current is 
Explanation:
From the question we are told that
The number of turns is
The cross-sectional area is 
The initial magnetic field is 
The magnetic field at time = 1.02 s is 
The resistance is 
The induced emf is mathematically represented as

The negative sign tells us that the induced emf is moving opposite to the change in magnetic flux
Here
is the change in magnetic flux which is mathematically represented as

Where dB is the change in magnetic field which is mathematically represented as

substituting values


Thus


So


The induced current i mathematically represented as

substituting values

