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Harlamova29_29 [7]
2 years ago
15

Which of the following has greater number of hydrogen molecule ? 9 gm of CH4 or 10gm of NH3​

Physics
1 answer:
sasho [114]2 years ago
5 0

Explanation:

I don't knoejajajajjjaj

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Downwelling is the process that moves cold, dense water from the ocean surface to the seafloor near the polar regions. how can d
mash [69]

Explanation:

Downwelling is the process where cold and heavy dense water moves down into the ocean floor and warm light dense water rises to the surface. As a result of downwelling, the water high dense water which rises to the water surface brings the oxygen rich water to the surface for the marine animals to breathe properly. Also when the ocean surface water becomes little warmer it becomes a little comfortable for the marine animals to survive in this severely cold climatic conditions at polar reasons.

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3 years ago
A cosmic ray muon with mass mμ = 1.88 ✕ 10−28 kg impacting the Earth's atmosphere slows down in proportion to the amount of matt
anyanavicka [17]

Answer:

a. the magnitude of the force experienced by the muon is 2.55 × 10⁻¹⁹N

b.  this force compare to the weight of the muon; the force is 1.38 × 10⁸ greater than muon

Explanation:

F= ma

v²=u² -2aS

(1.56 ✕ 10⁶)²=(2.40 ✕ 10⁶)²-2a(1220)

a=1.36×10⁹m/s²

recall

F=ma

F = 1.88 ✕ 10⁻²⁸ kg × 1.36×10⁹m/s²

F= 2.55 × 10⁻¹⁹N

the magnitude of the force experienced by the muon is 2.55 × 10⁻¹⁹N

b.  this force compare to the weight of the muon

F/mg= 2.55 × 10⁻¹⁹/ (1.88 ✕ 10⁻²⁸ × 9.8)

= 1.38 × 10⁸

6 0
3 years ago
WILL MARK BRAINLIEST!<br> WORTH A LOT OF POINTS!
Shalnov [3]

Answer:

A is your anwser

Explanation:

4 0
3 years ago
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A machine part has the shape of a solid uniform sphere of mass 220 g and diameter 4.50 cm . It is spinning about a frictionless
miss Akunina [59]

Answer:

The angular acceleration is 10.10 rad/s².

Explanation:

Given that,

Mass of sphere =220 g

Diameter = 4.50 cm

Friction force = 0.0200 N

Suppose we need to find its angular acceleration.

We need to calculate the angular acceleration

Using formula of torque

\tau=f\times r

I\times\alpha=f\times r

Here, I = moment of inertia of sphere

\dfrac{2}{5}mr^2\times\alpha=f\times r

\alpha=\dfrac{5\times f}{2mr}

Put the value into the formula

\alpha=\dfrac{5\times0.0200}{2\times220\times10^{-3}\times2.25\times10^{-2}}

\alpha=10.10\ rad/s^2

Hence, The angular acceleration is 10.10 rad/s².

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3 years ago
What is the acceleration of a car that slows down from 25.0 m/s to 10.0 m/s in 30 seconds? The car is traveling south.
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