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2 years ago

What is the period of a sound wave having a frequency of 340 Hz

Physics

2 answers:

sertanlavr [38]2 years ago

4 0

Answer:

lambda = 343 m/s divided by 340 Hz = 1.009 seconds

Hope it helps and have a wonderful day!

algol [13]2 years ago

4 0

Answer:

2.9x10^-3 secs

Explanation:

Data obtained from the question include:

f (frequency) = 340 Hz

T (period) =?

The period is simply the time taken to make one complete oscillation or vibration. The period is commonly referred to as the inverse of frequency.

T = 1/f

T = 1/340

T = 2.9x10^-3 secs

The period of the wave is 2.9x10^-3 secs

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Explanation:

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LD₂ = 10⁴mm⁻²

V = 1000 mm³

Distance = (LD)(V)

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Distance₂ = (10⁹mm⁻²)(1000mm³) = 1×10¹² mm = 1×10⁹ m

Conversion to miles:

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2 years ago

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An engine absorbs 1749 J from a hot reservoir and expels 539 J to a cold reservoir in each cycle. a. What is the engine’s effici

Masja [62]

Answer:

a)η = 69.18 %

b)W= 1210 J

c)P=3967.21 W

Explanation:

Given that

Q₁ = 1749 J

Q₂ = 539 J

From first law of thermodynamics

Q₁ = Q₂ +W

W=Work out put

Q₂=Heat rejected to the cold reservoir

Q₁ =heat absorb by hot reservoir

W= Q₁- Q₂

W= 1210 J

The efficiency given as

$\eta=\dfrac{W}{Q_1}$

$\eta=\dfrac{1210}{1749}$

$\eta=0.6918$

η = 69.18 %

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$P=\dfrac{1210}{0.305}\ W$

P=3967.21 W

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2 years ago

It's time for Santa to deliver his presents. Assuming he delivers presents all over the world, he has to travel about 75,000,000

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2 years ago

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Answer:

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Explanation:

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$F_{total}=-F_{braking}+mgsin{\theta}$

We solve the equations in order to find the braking force:

$F_{braking}=m(v_{o}-v{f})/t+mgsin{\theta}=17926(75.6-30.3)/6.4+17926*32.17*sin21.4=337299 pdl$

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2 years ago

What is a terrestrial planet?

NISA [10]

Answer: Hi!

A terrestrial planet is composed of a solid substance like rock or earth. A few examples are our planet, Earth, and the red planet, Mars. These are the planets that are the closest to the sun. There are four terrestrial planets in total. The only known terrestrial planet that has life, however, is our own, Earth! Earth has the perfect conditions for supporting life forms.

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