Answer:
0.6375 cm
Explanation:
coefficient of linear expansion of copper, α =
Lo = 25 m
Δ T = 25 degree C
According to the formula of thermal expansion which is linear in nature is given by
Where, ΔL be the change in length
=0.6375 cm
Answer:
B. x = 50, Y = 100 ,Z= 150
sorry if it's wrong
<span>a. dropping your backpack on the floor</span>
Answer:
The ratio of momentum is 1:2 since the velocity is constant and mass is of ratio 1:2
Explanation:
Given
mass of car = 500 kg
mass of truck = 1000 kg
velocity of car = velocity of truck = v = 5 m/s
momentum of car = ?
momentum of truck = ?
We know that the momentum is given by: p = mv , where m is mass and v is velocity.
momentum of car = x v = 500 x 5 = 2500 kg.m/s
momentum of truck = x v = 1000 x 5 = 5000 kg.m/s
The ratio of momentum =
=
= = 1:2
Here we infer that the ratio is 1:2. This is because momentum value depends on mass and velocity of body. In given problem velocity is constant. Hence depends only on mass. The ratio of mass is 1:2 and so the ratio of momentum.
Answer:
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