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DerKrebs [107]
4 years ago
12

What element on the periodic table has 31 protons and 37 neutrons?

Physics
1 answer:
tino4ka555 [31]4 years ago
8 0
The element Rubidium has 31 protons and 37 neutrons.
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Two glasses of water have the same thermal energy. must they have the same temperature? explain.
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Which of the following represents the greatest energy transition from a higher energy level to a lower one?
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All matter is made up of subatomic particles that contain atoms.TrueFalse
antiseptic1488 [7]

All matter is made up of subatomic particles that contain atoms. This is false statement.

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Learn more about matter here:- brainly.com/question/16982523

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3 0
1 year ago
A ball of 10kg falls from rest from a height of 150m, Neglating air resistance, calculate its kinetic energy after falling a dis
GaryK [48]

Answer: 3920\ J

Explanation:

Given

mass of ball m=10 kg

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It is dropped from the height and allowed to free fall for 40 m

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Insert u=0, a=g

\Rightarrow v^2-0=2\times 9.8\times 40\\\Rightarrow v=\sqrt{784}\\\Rightarrow v=28\ m/s

Kinetic energy at this instant

K.E.=\dfrac{1}{2}\times 10\times 28^2\\\\\Rightarrow K.E.=3920\ J

3 0
3 years ago
a car travels between the 100 meter and the 250 meter highway marker in 10 seconds calculate the velocity of the car during this
kozerog [31]

Given:\\\Delta s= 250m-100m=150m\\t=10s\\\\Find:\\v=?\\\\Roz.\\\\v=\frac{\Delta s}{t} \\\\v=\frac{150m}{10s} =15\frac{m}{s}

4 0
3 years ago
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