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Ratling [72]
3 years ago
7

why do coal miners use battery powered lamps rather than candle light. lantern or other open fires to provide light inside the t

unnel.
Chemistry
1 answer:
GREYUIT [131]3 years ago
8 0
Naked lights: lit candles, smoking a cigarette, carrying a box of matches are,<span> prohibited, as they could ignite any methane gas in pockets of the mine.</span>
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In the bohr model of the hydrogen atom, the radius of the electron orbit increases by a factor of four. What happens to the magn
cricket20 [7]

The magnitude of the orbital angular momentum of the electron is doubled when the radius of the electron orbit increases by a factor of four.

<h3>What is orbital angular momentum?</h3>

The orbital angular momentum is the sum of angular momenta of all electrons, it is the rotational analog of the linear momentum.

The formula of angular momentum

\rm mvr = \dfrac{nh}{2 \pi}

Thus, the magnitude of the orbital angular momentum of the electron is doubled when the radius of the electron orbit increases by a factor of four.

Learn more about orbital angular momentum

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7 0
2 years ago
A slide 3.3 m long makes an angle of 32° with the ground. How high is the top of the slide above the ground?
Lyrx [107]
Sin 32 = height/3.3 m
height = sin 32 (3.3 m)
height = 1.75 m
7 0
3 years ago
Given the following equation: 8 Fe + S 8  8 FeS
sleet_krkn [62]

Answer:

Explanation:

so u can work out the amount of moles of S8 by using

moles=mass/mr

=16/32.1=0.498moles

then use the molar ratio of

S : Fe

1:1 so the moles of Fe is the same 0.498

The use the equation

mass = mr x moles

=55.8 x 0.498

=27.78

so 27.8 g

hope this make sense :)

8 0
3 years ago
Your general impression suggests that your immediate action should be to: ____.
Lynna [10]

Your general impression suggests that your immediate action should be to call for additional help. The correct option is a.

<h3>What is immediate action?</h3>

Immediate actions are the actions that are taken without taking any time. These actions are taken when there is no time to think, and you should immediately think about the actions. The emergency condition needs immediate help.

During the time of general impression, one should immediately call for additional help. Additional people will give you suggestions for the problem.

Thus, the correct option is a. call for additional help.

To learn more about immediate action, refer to the link:

brainly.com/question/28084658

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6 0
1 year ago
What are the 2 types of electrical charge?​
BlackZzzverrR [31]

Answer: Electric charges are of two general types: positive and negative.

Hope this helps... Stay safe and have a great day.... :D

7 0
3 years ago
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