A string is vibrating between two posts as shown above. Students are to determine the speed of the wave within this string. They
1 answer:
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Answer:
F = 800 [N]
Explanation:
To be able to calculate this problem we must use the principle of momentum before and after the impact of the hammer.
We must summarize that after the impact the hammer does not move, therefore its speed is zero. In this way, we can propose the following equation.
ΣPbefore = ΣPafter
where:
m₁ = mass of the hammer = 0.15 [m/s]
v₁ = velocity of the hammer = 8 [m/s]
F = force [N] (units of Newtons)
t = time = 0.0015 [s]
v₂ = velocity of the hammer after the impact = 0
Note: The force is taken as negative since it is exerted by the nail on the hammer and this force is directed in the opposite direction to the movement of the hammer.
Answer:
The distance is 1.69 m.
Explanation:
Given that,
First charge
Second charge
Distance = 3.25 m
We need to calculate the distance
Using formula of electric field
Put the value into the formula
Hence, The distance is 1.69 m.