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3 years ago

12

In establishing standing waves with a Slinky®, your wrist oscillates with f frequency of 8.0 Hz, and the velocity of the wave is

40 m/s. What is the wavelength of this wave?

1 answer:

emmainna [20.7K]3 years ago

6 0

The answer is 5.0, as velocity = frequency * wavelength.

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A microscope has an objective lens with a focal length of 14.0mm . A small object is placed 0.80mm beyond the focal point of the

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Answer:

A. 260 mm

B. - 18

C. 175

Explanation:

A

The expression for the lens equation is

$\frac{1}{f} = \frac{1}{u} + \frac{1}{v}$

$\frac{1}{14.0mm} = \frac{1}{14.80 mm} + \frac{1}{v}$

$\frac{1}{v} = \frac{1}{14.0} - \frac{1}{14.80}$

v = 259 mm

= 260 mm or 26 cm (to 2 s.f)

check the attached files for additional solution

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