A 69.0 kg ice skater moving to the right with a velocity of 2.61 m/s throws a 0.22 kg snowball to the right with a velocity of 2
1 answer:
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Answer:
Explanation:
Modulus of elasticity of brick, Y = 28 x 10^9 Pa
mass of each, m = 40 kg
Area of each, A = 0.5 m²
number of bricks, n = 4
height, h = 5 m
Let the change in height is Δh.
Use the formula of Modulus of elasticity
E = stress/ strain
stress = n x m x g/A = 4 x 40 x 9.8 / 0.5 = 3136 Pa
So,
Δh = 5.6 x 10^-7 m
Answer:
The frequency is
Explanation:
From the question we are told that
The third harmonic frequency of the tight guitar string is
Let the original length be L
Then the length at which it is fingered is 0.7 L
Generally the fundamental is mathematically represented as
Now when it finger at 70% it original length is
Here v the velocity of sound
So
Also the fundamental frequency for the original length can also be represented as
substituting values
So
=>
=>