2 years ago

Question 3 of 5

Chemistry

2 answers:

miskamm [114]2 years ago

7 0

Answer:

D.Blue

Explanation:

Alexxandr [17]2 years ago

6 0

Answer:

Answer is D.Blue.

Explanation:

The hottest stars tend to appear blue or blue-white, whereas the coolest stars are red.

I hope it's helpful!

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Need help ASAP with this question

Karo-lina-s [1.5K]

Answer: noble gasses

Explanation: zoom on on the red section and look at the key for what red means.

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3 years ago

A boy swings a rubber ball attached to a string over his head in a horizontal, circular path. The piece of string is 1.15 m long

gregori [183]

Answer:

v = 16.49 m/s

Explanation:

Given that,

Length of the string, l = 1.15 m

The ball makes 137 complete turns each minute.

We know that, 1 turn = 6.28 rad

137 turns = 860.79 rad

1 min = 60 s

$\omega=\dfrac{860.79\ rad}{60\ s}\\\\=14.34\ rad/s$

We need to find the tangential velocity of the ball. It can be given by

$v=r\omega\\\\=1.15\times 14.34\\\\v=16.49\ m/s$

So, the tangential velocity of the ball is 16.49 m/s.

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3 years ago

the elements iron (Fe), copper (Cu), and mercury (Hg) are classified as metals. which physical property of metals do they all sh

koban [17]

Answer:

They are heavy metals.

Explanation:

Heavy metals are generally defined as metals with relatively high densities, atomic weights, or atomic numbers.

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3 years ago

Which is an element? ... air ...carbon dioxide ...hydrogen ...water Description

Natalka [10]

All Elements are obtained in the periodic table & water is Not an element it is a compound.

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3 years ago

Read 2 more answers

Stable nuclei with low atomic numbers, up to 20, have a neutron to proton ratio of approximately ________.

Pie

1 to 1. Most small atoms have the same number of protons and neutrons

6 0

3 years ago