3 years ago

Which argument best explains the charge of an atomic nucleus

Physics

2 answers:

Sati [7]3 years ago

7 0

Answer:

An atomic nucleus is positively charged because it is composed of protons.

Explanation:

define protons, match it up.

Rudik [331]3 years ago

3 0

What are the choices ?

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If a hockey player starts from rest and accelerates at a rate of 2.1 m/s2 how long does it take him to skate 30m

OLga [1]

Hello!

Let us apply the time function of space, in the uniform uniform motion (UUM)

Formula: $S = S_{o} + V_{o}* t + a* \frac{t^2}{2}$

Data:
S (Final position) = 30 m
So (Initial Position) = 0 m
Vo (Initial velocity) = 0 m/s
t (time) = ? (in seconds)
a (acceleration) = 2.1 m/s²

Solving:
$S = S_{o} + V_{o}* t + a* \frac{t^2}{2}$
$30 = 0 + 0*t + 2.1* \frac{t^2}{2}$
$30 = \frac{2.1t^2}{2}$
$30*2 = 2.1t^2$
$60 = 2.1t^2$
$2.1t^2 = 60$
$t^2 = \frac{60}{2.1}$
$t^2 \approx 28.5$
$t \approx \sqrt{28.5}$
$\boxed{\boxed{t \approx 5.3\:s}}\end{array}}\qquad\quad\checkmark$

Answer:
C. 5.3s

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4 years ago

A motorboat starting from rest on a lake accelerates in a straight line at a constant rate of 3.0 m s–2 for 8.0 s. How far does

ankoles [38]

Answer:

96m

Explanation:

Using SUVAT:

s=? u=0 a=3 t=8

s=ut+0.5*at^2

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3 years ago

The atmospheric temperature decreases when snow starts melting because the snow------------------------- from the atmosphere to

jek_recluse [69]

It absorbs thermal energy therefore melting the snow

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3 years ago

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If a quantity of heat equal to the magnitude of the change in mechanical energy of the water goes into the water, what is its in

Flauer [41]

Increase in temperature of water = 0.53 °C
Explanation:
Change in mechanical energy = Potential energy
Potential energy = mgh
Mass, m = Mass of 1 L water = 1 kg
Acceleration due to gravity, g = 9.81 m/s²
Height, h = 225 m
Potential energy = 1 x 9.81 x 225 = 2207.25 J
Because of this 2207.25 J water gets heated.
Heat energy, E = mcΔT
Mass, m = Mass of 1 L water = 1 kg
Specific heat of water, c = 4200 J/kg/C
Energy, E = 2207.25 J
Change in temperature, ΔT = ?
Substituting
2207.25 = 1 x 4200 x ΔT
ΔT = 0.53 °C
Increase in temperature of water = 0.53 °C

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3 years ago

A 6.0-kg object moving 5.0 m/s collides with and sticks to a 2.0-kg object. after the collision the composite object is moving 2

vredina [299]

m1v1 + m2v2 = (m1+m2)*(-vf)
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4 years ago

Which argument best explains the charge of an atomic nucleus​

Which argument best explains the charge of an atomic nucleus