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Lunna [17]
2 years ago
10

Parents have a major role in observing how young children grow at home. Create and discuss simple developmental monitoring tips

a parent can use at home before consulting a health professionals
Physics
1 answer:
Rudik [331]2 years ago
4 0

Answer:

by observation of their children

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Where is the value of kinetic energy equal to zero
bearhunter [10]

Answer:

if the object is not in motion

Explanation:

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In 10 seconds a car accelerates 4/ms to 60m/s. how fast was the car going before it accelerated?
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Well it seems like this problem gives you what you need.  You said the car was going 4m/s and then accelerated to 60m/s... so 4m/s would be your answer for the initial velocity
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Estimate the length of the neptunian year using the fact that the earth is 1.50Ã108km from the sun on average.
Ksenya-84 [330]

Answer:

Explanation:

We know that,

Neptune is 4.5×10^9 km from the sun

And given that,

Earth is 1.5×10^8km from sun

Then,

Let P be the orbital period and

Let a be the semi-major axis

Using Keplers third law

Then, the relation between the orbital period and the semi major axis is

P² ∝ a³

Then,

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So,

P(earth)²/a(earth)³ = P(neptune)² / a(neptune)³

Period of earth P(earth) =1year

Semi major axis of earth is

a(earth) = 1.5×10^8km

The semi major axis of Neptune is

a (Neptune) = 4.5×10^9km

So,

P(E)²/a(E)³ = P(N)² / a(N)³

1² / (1.5×10^8)³ = P(N)² / (4.5×10^9)³

Cross multiply

P(N)² = (4.5×10^9)³ / (1.5×10^8)³

P(N)² = 27000

P(N) =√27000

P(N) = 164.32years

The period of Neptune is 164.32years

6 0
3 years ago
HELP ME PLEASE!!!THIS IS SCIENCE!!
emmainna [20.7K]
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Why is OCl2 polar?<br> And how do you find the polarity of long organics like propane and acetone?
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In this problem, we are asked to prove that OCl2 is polar. The VSEPR model of OCl2 is bent. Cl has an electornegativity of 3.16 while O has an electronegativity of 3.44. In this case, we add  the two individual dipole moments because they are vectors. Since the sum is equal to greater than 0.5, the molecule should have to be polar.
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