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Ne4ueva [31]
3 years ago
8

You are given two same party balloons (one filled with helium and the

Physics
1 answer:
alexgriva [62]3 years ago
6 0

Answer:

you have to substitute the volume of the ballonn with no ruler

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A 1000-kg car traveling at 70 m/s takes 3 m to stop under full braking. the same car under similar road conditions, traveling at
azamat
We assume a=const (acceleration is constant. We apply the equation
v^2=v0^2+2as where s is the distance to stop v=0(m/s). We find the acceleration from this equation
a=-v0^2/(2s)=-70^2/(2*3) =-816.7 (m/s^2)

We know the acceleration, thus we find the distance necesssary to stop when initial speed is v=140 (m/s)
s=-v0^2/(2a) =140^2/(2*816.7)=12 (m)

5 0
4 years ago
A person standing on a scale feels a normal force of 655 N pushing up on him. What is his mass? (Unit=kg)
dimulka [17.4K]

Answer:

Approximately 66,8kg

Hope this help :D

Explanation:

F=mg. So 655N= 9.8 m/s² × mass.

Mass = 655 / 9.8

3 0
4 years ago
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The mass number of Fe2+ is 56. How many neutrons are there in a single Fe2+ atom?
bonufazy [111]
<span>The atomic number of a neutral atom is equal to the number of protons and the number of electrons of the atom. The atomic weight meanwhile is equal to the sum of the number of protons and number of neutrons. In this case, the number of protons is equal to 26. The number of neutrons hence is 30. </span>
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3 years ago
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What type of energy is cracking an egg
Alex17521 [72]
It is Kinetic energy
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3 years ago
What are the very small participes that make up all matter
Semenov [28]

<u>Answer</u> :

atom

<u>E</u><u>xplaination</u> :

You cannot see the fundamental particles that makes up matter.

Yet, ll matter os composed of such particle called atoms.

atoms - the smallest particle of an element that retains its identity in a chemical reaction.

<em>pls mark as brainliest...</em>

6 0
4 years ago
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