The whole of the data that you have researched on
Answer:
<h3>Examples of Good conductors of heat are, </h3>
Gold
Sliver
Copper
Mercury
brass
bronze
Lead
Aluminum
<h3>Uses of good conductors of heat </h3>
Used for making kettles
Used for making sauce pans
Explanation:
1) speed of bicycle = 
speed of bicycle= 
speed of bicycle = 10 miles/hour
2)speed of rocket = 
speed of rocket= 
speed of rocket= 742.57 meter/second
3)speed of jet plane = 
speed of jet plane= 
speed of jet plane= 132 meter/second
4)speed = 
time = 
time of trip= 
time of trip = 4.375 hour
5) Distance = speed × time
Distance = 6 × 3 × 60
Distance = 1080 meter
6) Average speed = 
Average speed = 
Average speed = 81.6 km/hour
7) Time = 
Time = 
Time = 3750 m/s
Answer:

Explanation:
Let the shells speed with respect to ground be 
Let the shells speed with respect to ground be 
mass of shell, 
mass of gun, 
The relative velocity of shell with respect to a free unconstrained gun, 
According to the Newton's third law of motion the direction of the velocity of gun and shell will be in the opposite direction.
So, the relation between the relative velocity and their individual velocity will be:
......................(1)
<u>And according to the conservation of momentum (as the condition is very close to the elastic collision):</u>

substitute the value of
from equation (1)






At certain altitude, the temperature of air decrease, The air becomes saturated and water vapour molecules starts condensing.
As the altitude of air increase, the atmospheric pressure decrease due to which the temperature of the air decrease. The water molecules in the atmosphere start condensing, which saturate the air (that is air can no hold water molecules), due to which the water vapour molecules starts condensing and falls on the earth in the form of rain.