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Gwar [14]
3 years ago
7

A sonar wave is reflected from the ocean floor. For which angles of incidence do the wave’s angle of reflection equal its angle

of incidence?
Physics
1 answer:
nadya68 [22]3 years ago
7 0
After a thorough research, there exists the same question that has the following choices.

<span>(1) angles less than 45°, only
(2) an angle of 45°, only
(3) angles greater than 45°, only
<span>(4) all angles of incidence

The correct answer (4) all angles of incidence.</span></span>
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A 215-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope a
Misha Larkins [42]

Answer:

303.9481875 N

Explanation:

t = Time taken = 2 seconds

F = Force

r = Radius = 1.5 m

I = Moment of Inertia

\alpha = Angular Acceleration

Torque

\tau=F\times r

\tau=I\times \alpha

\\\Rightarrow F\times r=I\times \alpha\\\Rightarrow F=\frac{I\times \alpha}{r}

Angular velocity

\omega=rev/s\times 2\pi\\\Rightarrow \omega=0.6\times 2\pi\\\Rightarrow \omega=3.76991\ rad/s

Angular acceleration

\alpha=\frac{\omega}{t}\\\Rightarrow \alpha=\frac{3.76991}{2}\\\Rightarrow \alpha=1.88495\ rad/s^2

I=\frac{1}{2}mr^2\\\Rightarrow I=\frac{1}{2}215\times 1.5^2\\\Rightarrow I=241.875\ kgm^2

F=\frac{I\times \alpha}{r}\\\Rightarrow F=\frac{241.875\times 1.88495}{1.5}\\\Rightarrow F=303.9481875\ N

The magnitude of the force to stop the merry-go-round is 303.9481875 N

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3 years ago
What are the variables in Gay-Lussac's law? pressure and volume pressure, temperature, and volume pressure and temperature volum
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pressure and temperature (assuming volume is constant)

Explanation:

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Explained

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this approach will highlight the particle nature and will not be relativistic.

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