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3 years ago

Write newton's second law for an astronaut lying on the floor of one of the habitats

Physics

2 answers:

kap26 [50]3 years ago

5 0

Fnet = m x v^2 / r = n

Leviafan [203]3 years ago

3 0

Hey there,
<span>Fnet = m x v² / r = n
</span>
Hope this helps :))

~Top

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In a ruby laser, an electron jumps from a higher energy level to a lower one. if the energy difference between the two levels is

Vaselesa [24]

The wavelength of the emitted photon is( $\lambda$ )= 690nm

<h3>How can we calculate the wavelength of the emitted photon?</h3>

To calculate the wavelength of the photon we are using the formula,

$\triangle E= \frac{h\times c}{\lambda}$

Or, $\lambda= \frac{h\times c}{\triangle E}$

We are given here,

$\triangle E$ = The energy difference between the two levels = 1. 8 ev= $1.8\times 1.6 \times 10^{-19}$ C.

h= Planck constant = $6.626\times 10^{-34}$ Js.

c= speed of light = $3\times10^8$ m/s.

We have to find the wavelength of the emitted photon = $\lambda$ m.

Therefore, we substitute the known parameters in the above equation, we can find that,

$\lambda= \frac{h\times c}{\triangle E}$

Or, $\lambda= \frac{6.626\times 10^{-34}\times 3\times 10^8}{1.8\times 1.6 \times 10^{-19}}$

Or, $\lambda= 690\times 10^{-9}$ m

Or, $\lambda$ =690 nm.

From the above calculation we can conclude that the wavelength of the emitted photon is 690nm.

Learn more about ruby laser:

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8 0

2 years ago

I need help please!!?!

krek1111 [17]

Answer:

Explanation:

plz plz this answer is good i hope

7 0

3 years ago

How does a pedometer help people reach their fitness goals

goldfiish [28.3K]

how does a pedometer help people reach their fitness goals?

a. It measures calories burned.

b. It usually doubles as an MP3 player and keeps people motivated.

c. They count steps during a workout.

d. They measure the number of lifts done per exercise.

8 0

3 years ago

Read 2 more answers

At t = 0, a battery is connected to a series arrangement of a resistor and an inductor. At what multiple of the inductive time c

Paraphin [41]

Answer:

0.2854

Explanation:

The Energy stored in coil is given by

U= $\frac{1}{2}$ L $I^{2}$

U=0.565Uo

$(\frac{1}{2} )L(i^{2} )=(0.565)(\frac{1}{2} )L(io^{2} )$

$(i^{2} )=(0.565)(io^{2} )$

$(ioe^{-t/T} )^{2}=(0.565) (io)^{2}$

$(io)^{2}e^{-2t/T}=(0.565)(io)^{2}$

$e^{-2t/T}=0.565$

Apply log: both sides we get

$\frac{-2t}{T}=-0.5709$

$\frac{t}{T}=0.2854$

5 0

4 years ago

What is meant by constructive and destructive interference

LenaWriter [7]

In waveform physics, constructive and destructive interference describes the way two different waves interact with one another. If two waves are aligned such that the peaks of both are in the same spot, the waves experience constructive interference - the two add together and become a single, more powerful wave. The opposite happens if the peak of one meets the trough of the other - the two cancel each other out, and the magnitude of the combined wave is lesser than the individual waves. There are also other, more complex versions of interference if they don’t align cleanly, but the most common descriptions of interference are the ones described above.

Hope this helps!

6 0

4 years ago