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3 years ago

9

Inside The Atom

1 answer:

Sidana [21]3 years ago

6 0

The space surrounding the center of an atom called the NUCLEUS that contains PROTONS and NEUTRONS

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A car is moving on the distance 35km in the time 30minutes,stays 20 minutes,the it moves again vith the velocite 60km/h in 25 mi

FinnZ [79.3K]

Velocity = distance/time
v = (35)/(1/2)
v = 70 km/h

60 km/h for 25 minutes
25 minutes = 25/60 hour
distance= velocity * time
d =(60) * (25/60)
d = 25 km

ΔV = { V(initial) - V(final) } / time
v= (70-60) / (45/60)
average velocity = 13.33 km/h
avg veloticy = 3.7 m/s

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3 years ago

A proton is released from rest at the positive plate of a parallelplatecapacitor. It crosses the capacitor and reaches the negat

Triss [41]

Answer:

2.1406 × $10^6$ m/sec

Explanation:

we know that energy is always conserved

so from the law of energy conservation

$qV=\frac{1}{2}mv^2$

here V is the potential difference

we know that mass of proton = 1.67× $10^{-27}$ kg

we have given speed =50000m/sec

so potential difference $V=\frac{\frac{1}{2}\times 1.67\times 10^{-27}50000^2}{1.6\times 10^{-19}}=13.045$

now mass of electron =9.11× $10^{-31}$

so for electron

$\frac{1}{2}\times 9.11\times 10^{-31}v^2=1.6\times 10^{-19}\times 13.045=2.1406\times 10^6 m/sec$

so the velocity of electron will be 2.1406× $10^6$ m/sec

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3 years ago

Do electric fields point towards or away from positive charges?

juin [17]

Answer:

it points towards positive charges

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3 years ago

How far does the gravitational field of Earth extend?

icang [17]

I JUST NEED POINTSSS sorry hope you do good tho!

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3. True or false: Evaporation is the change of state from a gas to a liquid. *

sammy [17]

Answer:

Explanation: ture

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