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avanturin [10]
3 years ago
8

Sound waves can't travel through

Physics
2 answers:
MariettaO [177]3 years ago
7 0

Answer:

D. a vacuum.

Explanation:

Sliva [168]3 years ago
4 0
Sound waves can't travel through vacuum. They can travel through all other mentioned materials, especially solids.
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What is the element with the lowest electronegativity value?
Lerok [7]
<h2>Answer: Francium </h2>

Let's start by explaining that electronegativity is a term coined by Linus Pauling and is determined by the <em>ability of an atom of a certain element to attract electrons when chemically combined with another atom. </em>

So, the more electronegative an element is, the more electrons it will attract.

It should be noted that this value can not be measured directly by experiments, but it can be determined indirectly by means of calculations from other atomic or molecular properties of the element. That is why the scale created by Pauling is an arbitrary scale, where the maximum value of electronegativity is 4, assigned to Fluorine (F) and the <u>lowest is 0.7, assigned to Francium (Fr).</u>

7 0
4 years ago
Usain Bolt's world-record 100 m sprint on August 16, 2009, has been analyzed in detail. At the start of the race, the 94.0 kg Bo
kifflom [539]

Answer:

893 Newtons

Explanation:

m = Mass of Usain Bolt = 94 kg

a = Acceleration of Usain Bolt in the first 0.89 seconds = 9.5 m/s²

From Newton's Second law

Force

F=ma

\\\Rightarrow F=94\times 9.5

\\\Rightarrow F=893\ N

The average horizontal force exerted by Bolt against the ground during the first 0.890 s of the race is 893 Newtons

3 0
3 years ago
Your friend has informed you that his/her uncle has decided not to look after him anymore.Write to your friends uncle giving him
Lorico [155]

Answer:

Cause you are their family and they need you. Do you wanna be someone who abandoned them or be the one they look to and dont dislike into adulthood. Also you signed onto this job no one said it was going to be easy but you making your life easier but harder for someone who is just a kid who still needs you.

7 0
3 years ago
Help needed ASAP will give brainliest
Cloud [144]

Answer:

I think the answer is a

Explanation:

This is because the 2 “v” lines are moving parallel to x and to eachother.

4 0
3 years ago
A physical science test book has a mass of 2.2 kg what is the weight on the earth
timofeeve [1]

Answer:

21.582 Newtons

Explanation:

The weight of an object on Earth is equal to W=9.81M where M is the mass of the object and the acceleration due to gravity is 9.81 m/s^2. Therefore, the weight of the book on the earth is W=9.81(2.2)=21.582N, or 21.582 Newtons

3 0
3 years ago
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