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3 years ago

What is the speed of a wave with a wavelength of 10 mm and a frequency of 5.0 Hz?

Physics

2 answers:

sleet_krkn [62]3 years ago

4 0

Speed = wavelength × frequency
speed = 10/1000 × 5.0
speed = 0.001 × 5.0
speed = 0.005m/s

Dmitriy789 [7]3 years ago

3 0

Answer:

Speed of the wave, v = 0.05 m/s

Explanation:

It is given that,

Wavelength of the wave, $\lambda=10\ mm=0.01\ m$

Frequency of the wave, $\nu=5\ Hz$

The speed of the wave is given by the product of frequency and the wavelength i.e.

$v=\nu\times \lambda$

$v=5\times 0.01$

$v=0.05\ m/s$

Hence, the speed of the wave is 0.05 m/s

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1 year ago

A bowling ball of mass 5.8 kg moves in a straight line at 4.34 m/s How fast must a Ping-Pong ball of mass 2.214 g move in a stra

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Answer: 11369.46 m/s

Explanation:

We have the following data:

$m_{1}=5.8 kg$ is the mass of the bowling ball

$V_{1}=4.34 m/s$ is the velocity of the bowling ball

$m_{2}=2.214 g \frac{1 kg}{1000 g}=0.002214 kg$ is the mass of the ping-pong ball

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$p_{1}=25.172 kg m/s$ (2)

And the momentum $p_{2}$ of the ping-pong ball is:

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If the momentum of the bowling ball is equal to the momentum of the ping-pong ball:

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Isolating $V_{2}$ :

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3 years ago

2. Tomas is hanging from a tree limb, that is inclined at a 65° angle. The force

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Answer:

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Were are told that the force

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F_x = 57 cos 65

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The net force will be;

F_net = √((F_y)² + (F_x)²)

F_net = √(51.66² + 24.09²)

F_net = √3249.0837

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