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zepelin [54]
3 years ago
12

If anyone can answer it'd be very appreciated, i need to pass this class

Physics
2 answers:
alexandr1967 [171]3 years ago
8 0

Answer: 0.4

Explanation:

siniylev [52]3 years ago
4 0

Answer:

b. 0.4

Explanation:

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Belle is walking south at an average velocity of 6 km/h. How many kilometers can she walk in three hours?
omeli [17]

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Explanation:

6 0
3 years ago
A sound wave has a speed of 342 m/s and a wavelength of 2.15 meters. What is the frequency of this wave?
jeka94

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159HZ A

Explanation:

frequency= speed/wavelength

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7 0
3 years ago
(Please help asap)
UNO [17]

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mass yes

Explanation:

8 0
3 years ago
Read 2 more answers
how large can the kinetic energy of an electron be that is localized within a distance (change in) x = .1 nmapproximately the di
elena-14-01-66 [18.8K]

Answer:

The kinetic energy of an electron is 1.54\times10^{-15}\ J

Explanation:

Given that,

Distance = 0.1 nm

We need to calculate the momentum

Using uncertainty principle

\Delta x\Delta p\geq\dfrac{h}{4\pi}

\Delta p\geq\dfrac{h}{\Delta x\times 4\pi}

Where, \Delta p = change in momentum

\Delta x = change in position

Put the value into the formula

\Delta p=\dfrac{6.6\times10^{-34}}{4\pi\times10^{-10}}

\Delta p=5.3\times10^{-23}

We need to calculate the kinetic energy for an electron

K.E=\dfrac{p^2}{2m}

Where, P = momentum

m = mass of electron

Put the value into the formula

K.E=\dfrac{(5.3\times10^{-23})^2}{2\times9.1\times10^{-31}}

K.E=1.54\times10^{-15}\ J

Hence, The kinetic energy of an electron is 1.54\times10^{-15}\ J

4 0
3 years ago
Atoms are____<br> in electric charge because they have<br> the same number of electrons as protons.
WITCHER [35]
Atoms are Neutral in charge because they have the same number of protons.
3 0
3 years ago
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