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miskamm [114]
3 years ago
6

Doctor prescribed drug which is 500mg for patient change this unit into gram

Physics
1 answer:
ololo11 [35]3 years ago
6 0

Answer:

.5 grams

Explanation:

1 gram is equal to 1000 milligrams (mg)

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1) Consider an electric power transmission line that carries a constant electric current of i = 500 A. The cylindrical copper ca
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Answer:  

t = 1.27 x 10⁹ s  

Explanation:  

First, we will find the volume of the wire:

Volume = V = AL  

where,  

A = Cross-sectional area of wire = πr² = π(1 cm)² = π(0.01 m)² = 3.14 x 10⁻⁴ m²  

L = Length of wire = 150 km = 150000 m  

Therefore,    

V = 47.12 m³

 

Now, we will find the number of electrons in the wire:  

No. of electrons = n = (Electrons per unit Volume)(V)  

n = (8.43 x 10²⁸ electrons/m³)(47.12 m³)  

n = 3.97 x 10³⁰ electrons  

Now, we will use the formula of current to find out the time taken by each electron to cross the wire:

I =\frac{q}{t}  

where,  

t = time = ?  

I = current = 500 A  

q = total charge = (n)(chareg on one electron)  

q = (3.97 x 10³⁰ electrons)(1.6 x 10⁻¹⁹ C/electron)  

q = 6.36 x 10¹¹ C  

500\ A = \frac{6.36\ x\ 10^{11}\ C}{t}\\\\t = \frac{6.36\ x\ 10^{11}\ C}{500\ A}

Therefore,

<u>t = 1.27 x 10⁹ s</u>

7 0
2 years ago
Explain what resonance is and give one example of a destructive outcome of resonance. Also give one example of a non-destructive
DaniilM [7]

Answer:

resonance is when a body is made to vibrate with the frequency of another body without touching it.

Explanation:

example of destructive: soldiers matching on a bridge unanimously can make the bridge collapse.

3 0
3 years ago
A scientist designed a foam container to help keep frozen foods from melting. Which best explains how the foam works?
FrozenT [24]
I think the answer should be D.<span>It reduces the amount of thermal energy that is transferred from outside to inside the container. </span>
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3 years ago
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What is the amplitude of a wave related to
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Answer:

intensity because square of the amplitude is proportional to the intensity of the wave

Explanation:

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A baseball is hit with a bat. The direction of the ball is completely reversed and its speed is doubled. If the actual contact w
alexdok [17]
Before the impact, let the velocity of the baseball was v m/s.

After being hit by the bat its velocity is -2v
So, change in velocity, Deltav=v-(-2v)=3v
Acceleration is defined as the rate of change in velocity, i.e. actual change in velocity divided by the time taken to change it. Time taken to change velocity is the time of actual contact of the bat and ball, i.e. 0.31 s.

a=(Deltav)/(Deltat)
=(3v)/0.37
Therefore, a/v=3/0.31=9.7 s^-1
So, the ratio of acceleration of the baseball to its original velocity is 9.7.
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