4 years ago

What happens to a wave when it moves from one medium to another?

Physics

1 answer:

Nina [5.8K]4 years ago

3 0

One side of the wave changes speed before the other side, causing the wave to move

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A 4-N object object swings on the end of a string as a simple pendulum. At the bottom of the swing, the tension in the string is

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Answer:

Explanation:

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3 years ago

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If R = 12 cm, M = 520 g, and m = 20 g (below), find the speed of the block after it has descended 50 cm starting from rest. Solv

timofeeve [1]

Answer:

v = 0.84 m/s

Explanation:

given,

R = 12 cm

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m (mass of block)= 20 g

s = 50 cm = 0.5 m

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Potential energy = Kinetic energy

$m g h = \dfrac{1}{2}mv^2 + \dfrac{1}{2}I\omega^2$

$I_{disk}= \dfrac{1}{2}MR^2$ and v = r ω

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$m g h = \dfrac{1}{2}v^2(m +\dfrac{1}{2}M)$

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3 years ago

Which way should a ceiling fan rotate in the summer

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