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BabaBlast [244]
3 years ago
10

Electrical charges are of two types. True False

Physics
2 answers:
julia-pushkina [17]3 years ago
4 0

Answer:

<h3>Electrical charges r of 2 types its true.</h3><h3>they are positive and negative.</h3>

<h2>hope it helps.</h2><h2>stay safe healthy and happy..</h2>
8_murik_8 [283]3 years ago
4 0

Answer: Think its true

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Lemur [1.5K]

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Your ride your bike down the hill and 25 miles in 1 hour what is your average speed
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25? this question makes no sense lol
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3 years ago
The Chernobyl reactor accident in what is now Ukraine was the worst nuclear disaster of all time. Fission products from the reac
Anna35 [415]

Answer:

The correct answer is "53.15 days".

Explanation:

Given that:

Half life of 131_{I},

T_{\frac{1}{2} }= 8 \ days

  • Let the initial activity be "R_o".
  • and, activity to time t be "R".

To find t when R will be "1%" of R_o, then

⇒ R=\frac{1}{100}R_o

As we know,

⇒ R=R_o e^{-\lambda t}

or,

∴ e^{\lambda t}=\frac{R_o}{R}

By putting the values, we get

        =\frac{R_o}{\frac{R}{100} }

        =100

We know that,

Decay constant, \lambda = \frac{ln2}{T_{\frac{1}{2} }}

hence,

⇒ \lambda t=ln100

     t=\frac{ln100}{\lambda}

        =\frac{ln100}{\frac{ln2}{8} }

        =53.15 \ days  

5 0
3 years ago
What substance is the most abundant in earths atmosphere
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Answer:

nitrogen

The atmosphere contains many gases, most in small amounts, including some pollutants and greenhouse gases. The most abundant gas in the atmosphere is nitrogen, with oxygen second. Argon, an inert gas, is the third most abundant gas in the atmosphere.

Explanation:

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Emotional Intelligence includes:
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Explanation
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