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Vilka [71]
3 years ago
6

The _______ is responsible for determining the frequency of vibration of the air column in the tube within a wind instrument. A.

effective length of the tube B. reed's frequency of vibration C. humidity of the air D. type of reed used
Physics
1 answer:
Vladimir [108]3 years ago
8 0

"A is correct answer." The effective length of the tube is responsible for determining the frequency of vibration of the air column in the tube within a wind instrument. "Hope this helps!" "Have a great day!" "Thank you for posting your question!"

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a charge of 6.4x10^-7 C experiences an electric force of 1.8x10^-1 N what is the electric field strength
Andreyy89
Field strength = force ÷ charge (E=F/Q)

E= 1.8×10^-1 ÷ 6.4×10^-7... to obtain ur answer

the formula is derived from the definition
Electric field : A region in space where a charged body experiences a force.
5 0
4 years ago
Find the frequency of light emitted in the transition from the 148th orbit to the 139th orbit. Find the frequency of light absor
Romashka-Z-Leto [24]

Answer:

f=3\times 10^8\times 64.90=19.4\times 10^9 s^{-1}

f=3\times 10^8\times39.9537=119.8613\times 10^8\ /sec

Explanation:

for the transition from 148th orbit to 138th orbit

we know the formula

\frac{1}{\lambda }=R\times \left ( \frac{1}{n^2_{final}}-\frac{1}{n^2_{initial}} \right )

where R is Rydberg constant whose value is  1.0974\times 10^7 /m

putting this value in equation

\frac{1}{\lambda }=1.0974\times 10^7 \left ( \frac{1}{139^2}-\frac{1}{148^2} \right )

\frac{1}{\lambda }=64.9075

f=c\lambda

f=3\times 10^8\times 64.90=19.4\times 10^9 s^{-1}

for the transition from 165th to  174th orbit

we know the formula

\frac{1}{\lambda }=R\times \left ( \frac{1}{n^2_{final}}-\frac{1}{n^2_{initial}} \right )

where R is Rydberg constant whose value is  1.0974\times 10^7 /m

putting this value in equation

\frac{1}{\lambda }=1.0974\times 10^7 \left ( \frac{1}{165^2}-\frac{1}{174^2} \right )

\frac{1}{\lambda }=39.95377

f=c\lambda

f=3\times 10^8\times39.9537=119.8613\times 10^8\ /sec

8 0
3 years ago
The amplitude of a sound wave determines it's
Snezhnost [94]
To my best knowledge the answer is D- Wavelength 
5 0
3 years ago
Read 2 more answers
At what net rate does heat radiate from a 300-m^2 black roof on a night when the roof's temperature is 33.0°C and the surroundin
Fynjy0 [20]

Answer:

24445.85 J/s

Explanation:

Area, A = 300 m^2

T = 33° C = 33 + 273 = 306 k

To = 18° C = 18 + 273 = 291 k

emissivity, e = 0.9

Use the Stefan's Boltzman law

E = \sigma  \times e \times A\times\left ( T^4 -T_{0}^{4}\right )

Where, e be the energy radiated per unit time, σ be the Stefan's constant, e be the emissivity, T be the temperature of the body and To be the absolute temperature of surroundings.

The value of Stefan's constant, σ = 5.67 x 10^-8 W/m^2k^4

By substituting the values

E = 5.64 \times 10^{-8}\times 0.9 \times 300 \times  (306^{4}-291^{4})

E = 24445.85 J/s

7 0
4 years ago
What will happen to people involved in handling Gamma rays if they are not providedwith lead coated apron and equipment without
Alexandra [31]

Answer:

When gamma rays pass through the human body, they ionize the tissue.  gamma ray ionization can affect healthy cells. When high levels of gamma rays bombard a body, a resulting dangerous ionization of tissue can cause skin cancer.

Explanation:

6 0
2 years ago
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