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3 years ago

To see how two traveling waves of the same frequency create a standing wave. Consider a traveling wave described by the formula

Physics

1 answer:

pentagon [3]3 years ago

5 0

Answer:

Check the explanation

Explanation:

so basically the standing wave will be created by two waves... y1 and the wave reflected, ie, y2=Asin(wt+Kx)..

so the resulting wave will be Y= y1 + y2 = 2A Sin(Kx) Cos(wt) = y(x) y(t)

so y(x)= 2ASin(Kx) and y(t)=Cos(wt)...

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A weather balloon is designed to expand to a maximum radius of 24 m at its working altitude, where the air pressure is 0.030 atm

nlexa [21]

Answer:

Radius at liftoff 8.98 m

Explanation:

At the working altitude;

maximum radius = 24 m

air pressure = 0.030 atm

air temperature = 200 K

At liftoff;

temperature = 349 K

pressure = 1 atm

radius = ?

First, we assume balloon is spherical in nature,

and that the working gas obeys the gas laws.

from the radius, we can find the volume of the balloon at working atmosphere.

Volume of a sphere = $\frac{4}{3} \pi r^{3}$

volume of balloon = $\frac{4}{3}$ x 3.142 x $24^{3}$ = 57913.34 m^3

using the gas equation,

$\frac{P1V1}{T1}$ = $\frac{P2V2}{T2}$

The subscript 1 indicates the properties of the gas at working altitude, and the subscript 2 indicates properties of the gas at liftoff.

imputing values, we have

$\frac{0.03*57913.34}{200}$ = $\frac{1*V2}{349}$

0.03 x 57913.34 x 349 = 200V2

V2 = 606352.67/200 = 3031.76 m^3 this is the volume occupied by the gas in the balloon at liftoff.

from the formula volume of a sphere,

V = $\frac{4}{3} \pi r^{3}$ = $\frac{4}{3}$ x 3.142 x $r^{3}$ = 3031.76

4.19 $r^{3}$ = 3031.76

$r^{3}$ = 3031.76/4.19

radius r of the balloon on liftoff = $\sqrt[3]{723.57}$ = 8.98 m

4 0

3 years ago

There is no( ) in time between the action and the reaction

Lesechka [4]

There is no (gap) in time between the action and the reaction

hope that helps:)

4 0

4 years ago

Which of the following terms describes the streak of light created when a space object enters Earth's atmosphere?

Burka [1]

Impact crater would be the answer but tell me if I'm roght

5 0

4 years ago

Read 2 more answers

Practice report of resistance measurement with Wheatstone bridge

belka [17]

Answer: Hii

Explanation: I had a picture.. so i think this might help you.. I answered this question using this picture, so i thought same might go to u too.. Hv a look.. Good Luck..!!

Download pdf

6 0

3 years ago

Using the experimentally determined resonant frequency and measured value of the capacitor, find the value of the inductor. 4. d

mafiozo [28]

2.496 HZ is the resistance change the resonant frequency.

Given, Supply frequency, f = 60 12

number of poles, P = 4

Full load speed, Ne= 1725 rpm

Synchronous speed; No= 1201= 120X60 = 1800 rpm

We know the formula for Full load-speed

Ne = N's (1 - Sf)

where se = full load rotor ship

Ne = 1 - SP

SQ = 1- Ne = 1- 1725 = 0.0416 DY 4-16%

1800

SQ= 4. 16 % or 0.0416

Frequency of rotor, fy= Sgif = (0.0416) ( 60 ) = 2.496 Hz

fr = 2.496 HZ

Learn more about Frequency here: brainly.com/question/16148316

#SPJ4

8 0

2 years ago