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matrenka [14]
3 years ago
15

1. what information does the atomic mass of an element provide?

Physics
2 answers:
avanturin [10]3 years ago
8 0
1. d 
2. a 
in an atom, the protons=electrons 
3. a 
atomic number= number of protons 
4. c 
protons are the "fingerprint" of an element 
5. d 
hope this helps! 
Vilka [71]3 years ago
3 0
D, D, C, C, D.
There is no such designation as "Brainly pro", and no mechanism for awarding more points after an answer is posted. But thanks for the insanely generous 1 full point per answer anyway !
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On a hot summer day, 3.50 ✕ 106 J of heat transfer into a parked car takes place, increasing its temperature from 36.5°C to 44.4
anygoal [31]

Answer:

a) \Delta s=443037.9747\ J.K^{-1}

b) \Delta s=31868131.8681\ J.K^{-1}

Explanation:

a)

Given:

amount of heat transfer occurred,dQ=3.5\times 10^6\ J

initial temperature of car, T_i=36.5+273=309.5\ K

final temperature of car, T_f=44.4+273=317.4\ K

We know that the change in entropy is given by:

\Delta s=\frac{dQ}{T_f-T_i}

\Delta s=\frac{3.5\times 10^6}{(44.4-36.5)} (heat is transferred into the system of car)

\Delta s=443037.9747\ J.K^{-1}

b)

amount of heat transfer form the system of house, dQ=5.8\times 10^8\ J

initial temperature of house, T_i=23.5+273=296.5\ K

final temperature of house, T_f=5.3+273=278.3\ K

\Delta s=\frac{dQ}{T_f-T_i}

\Delta s=\frac{5.8\times 10^8}{278.3-296.5}

\Delta s=31868131.8681\ J.K^{-1}

6 0
3 years ago
How far will a freely falling object fall from rest in 5 seconds?​
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<h2><em>how far will a freely falling object fall from rest in 5 seconds?</em></h2>

  • <em>If an object free falls from rest for 5 seconds, its speed will be <u>about 50 m/s.</u></em>

<em><u>hope </u></em><em><u>it</u></em><em><u> helps</u></em>

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A circular loop ( radius = 0.5 m) carries a current of 3.0 A and has unit normal vector of (2i - j +2k)/3 what is x component of
Roman55 [17]

Answer:

T=9.42Nm

Explanation:

From the question we are told that:

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Normal vector n=\frac{(2i - j +2k)}{3}

Magnetic field B= (2i-6j) T

Generally the equation for Area is mathematically given by

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Generally the equation for Torque is mathematically given by

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Where

 i'*B= \begin{bmatrix}2&-1&2\\2&-6&0\end{bmatrix}

 X\ component\ of\ i'*B= [(-1 * 0)-(2*-6)]

 X\ component\ of\ i'*B=12

Therefore

 T=0.7853*12

 T=9.42Nm

7 0
2 years ago
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