3 years ago

What is the speed of sound dependent on?

Physics

1 answer:

mojhsa [17]3 years ago

5 0

Depends on the elasticity and density of the medium through what it is traveling <span> </span>

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Which of these is an uneven rhythm movement? Question 5 options:

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Sliding would be an uneven rhythm because Galloping and skipping has a constant flow of the same movement and same noise.

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Two 0.20-kg balls, moving at 4 m/s east, strike a wall. Ball A bounces backwards at the same speed. Ball B stops. Which statemen

muminat

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Option A

Explanation:

From the question we are told that:

Mass $m=0.20kg$

Velocity $v=4m/s$

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$M_{a1}=0.2*4$

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Final Momentum

$M_{a2}=-0.8kgm/s$

Therefore

$\triangle M_a=-1.6kgm/s$

Generally the equation for momentum for Ball B is mathematically given by

Initial Momentum

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3 years ago

When a hammer thrower releases her ball, she is aiming to maximize the distance from the starting ring. Assume she releases the

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Answer:

The angular velocity is 15.37 rad/s

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As per the question:

$\theta = 54.6^{\circ}$

Horizontal distance, x = 30.1 m

Distance of the ball from the rotation axis is its radius, R = 1.15 m

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To calculate the angular velocity:

Linear velocity, v = $\sqrt{\frac{gx}{sin2\theta}}$

v = $\sqrt{\frac{9.8\times 30.1}{sin2\times 54.6}}$

v = $\sqrt{\frac{294.98}{sin109.2^{\circ}}} = 17.67\ m/s$

Now,

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$v = \omega R$

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$\omega = \frac{v}{R} = \frac{17.67}{1.15} = 15.37\ rad/s$

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