What number will be shown by hydrometer if sunk in pure water ?

Physics

2 answers:

adoni [48]3 years ago

8 0

1000kg/meters cubed if it’s sunk in pure water

serious [3.7K]3 years ago

7 0

The hydrometer displays the density of the liquid you stick it in, COMPARED TO WATER.

If you stick it in pure water, it should read 1.00 . This is a good way to check your hydrometer and see whether it's reading correctly ("calibrated").

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A light ray in air hits piece of quartz at a 39.0 deg angle. Inside the quartz, the light slows down to 2.06*10^8 m/s. At what a

Naddika [18.5K]

Answer:

Angle of light at which it will travel in the quartz is given as

$\theta = 25.6^o$

Explanation:

As we know that the refractive index of a medium is the ratio of speed of light in air and speed of light in the medium

So we will have

$\mu = \frac{c}{v}$

here we have

$\mu = \frac{3 \times 10^8}{2.06 \times 10^8}$

$\mu = 1.456$

now by Snell's law we have

$n_1 sin\theta_1 = n_2 sin\theta_2$

$1 sin39 = 1.456 sin\theta$

$\theta = 25.6^o$

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4 years ago

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alexgriva [62]

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3 0

3 years ago

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What is the acceleration if a 5 kg cart is pushed with 30 N of force?

sp2606 [1]

Answer:

Explanation:

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