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3 years ago

Can I get some help on number 1??

Chemistry

1 answer:

jolli1 [7]3 years ago

7 0

1.

Viscosity of honey is higher than that of water.

The water drops falling during rain takes circular shape beacuse of surface tension.

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How do you think the crocodile might affected if it wandered near a strong magnet?

vodomira [7]

According to florida wildlife group who experimentally tape magnets to crocodile heads to disrupt their homing ability so they don't wander into residential areas

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2 years ago

Alveoli are tiny sacs of air in the lungs. Their average diameter is 4.50 × 10−5 m. Calculate the uncertainty in the velocity of

Arisa [49]

<u>Answer:</u> The uncertainty in the velocity of oxygen molecule is $4.424\times 10^{-5}m/s$

<u>Explanation:</u>

The diameter of the molecule will be equal to the uncertainty in position.

The equation representing Heisenberg's uncertainty principle follows:

$\Delta x.\Delta p=\frac{h}{2\pi}$

where,

$\Delta x$ = uncertainty in position = d = $4.50\times 10^{-5}m$

$\Delta p$ = uncertainty in momentum = $m\Delta v$

m = mass of oxygen molecule = $5.30\times 10^{-26}kg$

h = Planck's constant = $6.627\times 10^{-34}kgm^2/s^2$

Putting values in above equation, we get:

$4.50\times 10^{-5}m\times 5.30\times 10^{-26}kg\times \Delta v=\frac{6.627\times 10^{-34}kgm^2/s}{2\times 3.14}\\\\\Delta v=\frac{6.627\times 10^{-34}kgm^2/s^2}{2\times 3.14\times 4.50\times 10^{-5}m\times 5.30\times 10^{-26}kg}=4.424\times 10^{-5}m/s$

Hence, the uncertainty in the velocity of oxygen molecule is $4.424\times 10^{-5}m/s$

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3 years ago

Which geoigic feature is most likey to from a mid

zvonat [6]

should be ocean ridges im not sure hope this helps tho

6 0

2 years ago

Read 2 more answers

Calculate the frequency of radiation with a wavelength of 1.08 x 10^-6 m. simple explanation please

pishuonlain [190]

C = vf
c stands for the speed of waves (which is a constant that is 3 x 10^8)
v stands for the wavelength (which is given)
f stands for frequency (what we are solving for)
3 x 10^8 = (1.08 x 10^-6)f
Divide both sides by the given wavelength
f = 2.78 * 10^14 seconds

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2 years ago

Why do scientist use models to study atoms and molecules?

Nesterboy [21]

This allows us to visually see the structure of the atoms/ molecules so we can get a better understanding of what they look like.

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3 years ago