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Art [367]
3 years ago
5

All of the noble gases have _______ electrons in their outer shell

Physics
1 answer:
Anna007 [38]3 years ago
8 0

Answer:

8

Explanation:

All noble gasses have 8 electrons in their outer shell

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The Sun travels in a circular orbit at a velocity of 220 km/second at a distance of 8.5 kiloparsecs from the center of the Galax
Marrrta [24]

Answer:

2.353 × 10⁵ years

Explanation:

Since speed, v = distance/time

time, t = distance/speed

The distance, d = circumference of orbit = 2πr where r = radius of orbit = 8.5 kiloparsecs = 8.5 kiloparsecs × 3.1 × 10¹³ kilometers/parsec = ‭26.35‬ × 10¹³ kilometers and velocity of sun, v = 220 km/s

So, the time it takes to complete one orbit, T is

T = 2πr/v

= 2π × 26.35‬ × 10¹³ km/220 km/s

= 165.562  × 10¹³ km ÷ 220 km/s

= 0.753 × 10¹³ s

= 7.53 × 10¹² s

We now convert T to years

T = 7.53 × 10¹² s ÷ 3.2 × 10⁷ seconds/year

T = 2.353 × 10⁵ years

8 0
3 years ago
What is the momentum of a baseball with a mass of 4 kg being thrown at a velocity of 84 m/s towards the hitter
Delvig [45]

Answer:

<h3>The answer is 336 kgm/s</h3>

Explanation:

The momentum of an object can be found by using the formula

<h3>momentum = mass × velocity</h3>

From the question

mass = 4 kg

velocity = 84 m/s

We have

momentum = 4 × 84

We have the final answer as

<h3>336 kgm/s</h3>

Hope this helps you

7 0
3 years ago
Read 2 more answers
A 2000 kg truck is traveling at 25 m/s. Determine the impulse needed
Vitek1552 [10]

Answer:

A 7kg impulse

Explanation:

i think sorry if not

3 0
3 years ago
Hemoglobin is a molecule found in blood used to transport oxygen throughout the body. What type of biological compound is this?
Hatshy [7]

Answer:

Hemoglobin is a protein (because it's a molecule that's not a living part of the cell but aids in cell processes).

8 0
4 years ago
Identify the total number of protons and neutrons in the nucleus of the most common isotope of manganese
Usimov [2.4K]
Name: Manganese
Symbol: Mn
Atomic Number: 25
Atomic Mass: 54.93805 amu
Melting Point: 1245.0 °C (1518.15 K, 2273.0 °F)
Boiling Point: 1962.0 °C (2235.15 K, 3563.6 °F)
Number of Protons/Electrons: 25
Number of Neutrons: 30
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 7.43 g/cm3
Color: silverish/grayish
8 0
3 years ago
Read 2 more answers
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