Answer:
Explanation:
Puck A's initial speed is 
and move in a direction 
after the collision.
#
since there's no external force on the system(
#The collision equation can be written as;
The kinetic energies before and after the collision are expressed as:
Let +x along A's initial direction and +y along A's final direction makes the angle 
#Substitute in 
:
Hence, the the speed of puck A after the collision is 12.891 m/s
#. The velocity of A after the collision is;
Substitute 
into 
:
This is the velocity of puck B after the collision, it's speed is:
The velocity of puck B after the collision is 6.8544 m/s
c. The direction of puck B after the collision is:
Hence, the direction of B's velocity after the collision is 62°
Answer: Gases have three characteristic properties: (1) they are easy to compress, (2) they expand to fill their containers, and (3) they occupy far more space than the liquids or solids from which they form. An internal combustion engine provides a good example of the ease with which gases can be compressed.
Explanation:
Answer:
(3 ) friction hope this is correct
Answer:
Joule’s law of heating states that when a current ‘i ' passes through a conductor of resistance ‘r’ for time ‘t’ then the heat developed in the conductor is equal to the product of the square of the current, the resistance and time.
H = i 2 rt
The reason behind the heat produced is the collision of the free electrons with the lattice ions or atoms while accelerating in presence of the external electric field.
we know that
volt= work done/ total charge or v = w/q
from this we get w= vq
we know that current i = q / t
so q = it
putting this in prev equation
we get w = vit
from ohms law v = ir
putting it in prev eq we get
w = irit = i2rt joule as work is stored as heat soH = I2RT Joules
if a current carrying conductor having resistance (r) gets heated by to passing of current (i) for time (t) and the heat thereby produced be H
joules law states that
H propotional to i^ 2 when r and t are constant
H propotional to r when I and t are constant
H propotional to t when r and I constant
For A Brainliest Plz? Here is the Answer:
