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3 years ago

A tree is 24 feet 8 inches tall. What is its height in meters?

Physics

1 answer:

Serggg [28]3 years ago

6 0

In meters, that would be 7.4676

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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

A car moves around a wide turn going 45 mi/hr the whole time. The car has a constant _____.

MArishka [77]

Answer:

answers d

Explanation:

hopes it helps

5 0

2 years ago

Read 2 more answers

Is it possible for the electric field between two positive charges to equal zero along the line joining the two charges?

MrRa [10]

Answer:

Yes electric field between the line joining may be zero when both the charges are of opposite magnitude

Explanation:

Electric field due to a point charge is given by $E=\frac{1}{4\pi \epsilon _0}\frac{Q}{r^2}$

From the relation of magnitude of electric field we can see that magnitude of electric field depends upon the m,magnitude of charge and distance between them

So electric field between the line joining may be zero when both charges are of opposite magnitude ( Means if one charge is positive then other is negative )

6 0

3 years ago

Which layer of the atmosphere is between the mesosphere and the exosphere?

Alinara [238K]

Answer:

The answer is thermosphere

5 0

3 years ago

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Although the temperature gradient changes from region to region in the homosphere, there is one gradient that stays the same. it

bezimeni [28]

Answer: the answer is air gradient