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Trava [24]
4 years ago
10

Which data from ocean rocks showed seafloor spreading and convinced scientists the theory of plate tectonics was valid?A.

Physics
1 answer:
Lena [83]4 years ago
3 0
The Answer is B. paleomagnetism
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"determine the average velocity of the particle over the time interval"
Softa [21]
This link should help you out https://quizlet.com/40330134/biomechanics-questions-flash-cards/

5 0
4 years ago
what is the energy (in eV units) carried by one photon violet light that has a wavelength of 4.5e-7?
DaniilM [7]
The energy of a photon is given by
E=hf
where h is the Planck constant and f is the photon frequency.

We can find the photon's frequency by using the following relationship:
f= \frac{c}{\lambda}
where c is the speed of light and \lambda is the photon's wavelength. By plugging numbers into the equation, we find
f= \frac{c}{\lambda}= \frac{3 \cdot 10^8 m/s}{4.5 \cdot 10^{-7} m}=6.67 \cdot 10^{14}Hz

And so now we can find the photon energy
E=hf=(6.6 \cdot 10^{-34} Js)(6.67 \cdot 10^{14}Hz )=4.4 \cdot 10^{-19} J

We know that 1 Joule corresponds to
1 J = 1.6 \cdot 10^{-19} eV
So we can convert the photon's energy into electronvolts:
E= \frac{4.4 \cdot 10^{-19} J }{1.6 \cdot 10^{-19} J/eV}=2.75 eV
4 0
4 years ago
While 75-kg Anthony roller skates at 3 m/s, 60-kg Sue jumps into his arms with a velocity of 5 m/s. How fast does the pair go to
anzhelika [568]

Apply conservation of linear momentum

\\ \rm\Rrightarrow m1v1+m2v2=(m1+m2)V3

\\ \rm\Rrightarrow 75(3)+60(5)=(75+60)V3

\\ \rm\Rrightarrow 225+300=135v3

\\ \rm\Rrightarrow 525=135v3

\\ \rm\Rrightarrow V3=3.89m/s

7 0
2 years ago
What type of wave is produced when the frequency of a visible light wave is increased
SIZIF [17.4K]

-- If the frequency of a wave is too high for our eyes to detect it ... but not <u>too too</u> high ... we call it an <em>ultraviolet </em>wave.

-- If the wave's frequency is even higher than that, we call it an <em>X-ray</em> wave.

-- If the wave's frequency is even higher than that, we call it a <em>Gamma Ray </em>wave.

7 0
4 years ago
If someone is whispering, but you cant hear them, how do you fix that problem?
Readme [11.4K]
The answer is C
Hope this helps!
6 0
4 years ago
Read 2 more answers
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