A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surfac
1 answer:
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Answer:
Explanation:
There's a formula for this:
F being force, k being the spring constant, and displacement being the change in x
We are given the force and the spring constant, so this is essentially isolating the Δx term. Do 60N/120N per meter. The newtons cancel out and you get a final answer of Δx = 0.5 meters
Answer:
(a) 40.6 degree
Explanation:
When refraction takes place from slab to water, the critical angle is 60 degree.
Use Snell's law
refractive index of water with respect to slab
μs = 1.536
Now for slab air interface, the critical angle is C.
1 / 1.536 = Sin C
C = 40.6 degree
The new force of gravitational attraction is D. 20 newtons
Explanation:
The magnitude of the gravitational force between two objects is given by :
(1)
where
is the gravitational constant
m1, m2 are the masses of the two objects
r is the distance between them
In this problem, the initial gravitational force between the two objects A and B is
F = 5 N
When the distance between them is r.
Later, the distance is reduced in half:
Substituting into eq.(1), we see how does the force change:
So, the force increases by 4 times. Therefore, the new force is
Learn more about gravitational force:
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