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3 years ago

Suppose a sound wave and a light wave have the same frequency.

Physics

2 answers:

dedylja [7]3 years ago

5 0

Answer:

The light wave has a longer wavelength and has the greater speed.

Explanation:

light has a far more greater speed than sound. The speed of sound in air is about 343m/s while that of light is around $3 *10^{8}m/s$

wavelength (λ) = $\frac{V}{f}$

since the frequencies of sound and light are same from the question, the wavelength would depend on the magnitude of their velocities. Light with a higher speed would have a longer wavelength.

vagabundo [1.1K]3 years ago

4 0

Answer:

The light wave has a longer wavelength and has the greater speed.

Explanation:

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The figure shows two springs (k1 = 10 N/m and k2 = 20 N/m ) attached to a block that can slide on a frictionless surface. In the

Rainbow [258]

Answer:

Explanation:

a )

Energy stored by left spring when compressed = 1/2 k x²

= .5 x 10 x .02² = .002 J .

Let compression in right spring = y

energy stored to right spring = 1/2 k y²

1/2 k y² = 0.002

.5 x 20 x y² = 0.002

y = .01414 m

= 1.4 cm

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2 years ago

The most likely models of the planet Mercury indicate that more than half the planet may be composed of________.

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Answer:

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3 years ago

A room has a wall with an R value of 18 F sq.ft. hr/BTU. The room is 15 feet long and 11 feet wide with walls that are 9 ft high

seropon [69]

Answer:

The heat transferred through the wall that day is 13728 BTUs

Explanation:

Here, we have the area of the wall given as

Area of wall = 2 × Length × Height + 2 × Width × Height

Length = 15 feet

Width = 11 Feet and

Height = 9 feet

Therefore, the area = 2×15×9 + 2×11×9 = 468 ft²

Temperature difference is given by

Average outside temperature - Wall temperature = 40 - 18 = 22 °F

Therefore the heat transferred through the wall that day (24 hours) at 18 sq.ft. hr/BTU is given by;

468 × 22 × 24/18 = 13728 = 13728 BTUs.

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3 years ago

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Fynjy0 [20]

The correct answer is: C. It is the point beyond which neither light nor anything else can escape.

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3 years ago

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Gnesinka [82]

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$KE_i+PE_i = KE_f+PE_f$