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MariettaO [177]
3 years ago
15

A wave has a wavelength of 9 mm and a frequency of 6 hertz. What is its speed?

Physics
1 answer:
Marrrta [24]3 years ago
5 0
Speed = (frequency)x(wavelength).

Frequency = 6 Hz
Wavelength = 9mm = 0.009m.

Speed = (6 Hz) x (0.009m) = 0.054 m/s   or   54 mm/sec.
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A 2000 kg car experiences a braking force of 10000N and skids to a 14 m stop. What was the speed of the car just before the brak
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Answer:

V = 11.83 m/s

Explanation:

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To find the final velocity of the car;

First of all, we would determine the acceleration of the car;

Acceleration = force/mass

Acceleration = 10000/2000

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Next, we would use the third equation of motion to find the final velocity;

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2 years ago
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