Radiation do not require material medium to travel while convection requires material medium for travelling.
The main difference between radiation and another method for heat transfer is that radiation don't require medium for its transfer.
So, the key difference between radiation and convection is radiation do not require medium for its transaction.
Answer:four times
Explanation:
Given
mass of both cars A and B are same suppose m
but velocity of car B is same as of car A
Suppose velocity of car A is u
Velocity of car B is 2 u
A constant force is applied on both the cars such that they come to rest by travelling certain distance
using to find the distance traveled
where, v=final velocity
u=initial velocity
a=acceleration(offered by force)
s=displacement
final velocity is zero
For car A


For car B


divide 1 and 2 we get

thus 
distance traveled by car B is four time of car A
If the box is moving at constant velocity, net force must be zero, so:
F + fr = 0
fr = -F
<u>fr = -40 N</u>
The Answer To This Is A , The Most Reactive Of The Alkali Explode Due To Reactions To Water
Answer:
induced current
Explanation:
intentionally manipulated.