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lisabon 2012 [21]
3 years ago
6

3. If there is an atomic mass of 47

Physics
1 answer:
DochEvi [55]3 years ago
4 0

Answer:

20

27

Explanation:

Given parameters:

Atomic mass  = 47

Atomic number  = 20

Unknown:

Number of protons  = ?

Number of neutrons  = ?

Solution:

To solve this problem,

  Atomic mass  = number of protons + number of neutrons

    Atomic number  = number of protons

So;

   Number of protons  = 20

 Now;

    Number of neutrons  = Atomic mass  - number of protons

     Number of neutrons  = 47  - 20  = 27

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When the pressure on a gas increases,what does the volume do?
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Answer:

As pressure goes up, volume goes down.

Explanation:

Pressure and volume of a gas are inversely proportional.  This means that as pressure goes up, volume goes down.  And as volume goes up, pressure goes down.

Cheers.

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If a scale on Earth reads 650 N, what is your mass?
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If the scale reads 650N, then the mass of whoever it is standing on the scale is

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It's not MY mass, even if I'm the one standing on the scale. 
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3 years ago
Suppose the microphone on an AM radio is not working properly. Which best explains how this will affect the process of amplitude
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You can have it your own definition of
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What cause-and-effect relationship is described in this
nydimaria [60]

The term cause and effect relationship relates to a situation where an effect is directly traceable to a cause.

<h3>What is cause and effect relationship?</h3>

The term cause and effect relationship relates to a situation where an effect is directly traceable to a cause. The question is incomplete and the article was not mentioned.

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8 0
2 years ago
During your summer internship for an aerospace company, you are asked to design a small research rocket. The rocket is to be lau
Viktor [21]

Answer:

6.75 seconds

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration = 16 m/s²

g = Acceleration due to gravity = 9.81 m/s²

Let y be the distance the rocket is accelerating

960-y is the distance traveled in free fall

v^2-u^2=2as\\\Rightarrow v=\sqrt{2as+u^2}\\\Rightarrow v=\sqrt{2\times 16\times y+0^2}\\\Rightarrow v^2=32y\ m/s

In free fall

v^2-u^2=2g(960-y)\\\Rightarrow 0-32y=2g(960-y)\\\Rightarrow -32y=2\times -9.81(960-y)\\\Rightarrow 960-y=\dfrac{-32}{2\times -9.81}y\\\Rightarrow 960-y=1.63098878695y\\\Rightarrow 960=2.63098878695y\\\Rightarrow y=\dfrac{960}{2.63098878695}\\\Rightarrow y=364.881828749\ m

The distance the rocket will keep accelerating is 364.881828749 m

After which it will travel 960-364.881828749 = 595.118171251 m in free fall

s=ut+\frac{1}{2}at^2\\\Rightarrow 364.881828749=0t+\frac{1}{2}\times 16\times t^2\\\Rightarrow t=\sqrt{\frac{364.881828749\times 2}{16}}\\\Rightarrow t=6.75353452598\ s

The time the rocket is accelerating is 6.75 seconds

5 0
3 years ago
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