Meghan and Rachel each apply the same amount of force to two different bowling balls. Meghan's ball, (ball A), weighs 3 pounds,
2 answers:
Answer: The speed of Rachel's all will be more than the speed of the Meghan's ball.
Explanation: Force is defined as the rate of change of momentum of an object over time.
Mathematically,
where, F = force exerted by the object
= change in velocity of the object
m = Mass of the object
t = Time taken
We are given that:
Force exerted by both Rachel and Meghan are same.
Let the mass of Rachel's ball be x.
Mass of Rachel's ball = x
Mass of Meghan's ball = 3x
Relation between mass and speed (velocity) is written by:
The object having higher mass will have the lower velocity or speed.
Hence, the speed of Rachel's ball is more than the Meghan's ball because the mass of Rachel's ball is lower than the Meghan's ball.
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Given :
Human blood should have around 1.04 kg/L platelets.
A blood sample of 4.01 milliliters is collected from a patient to be analyzed for a platelet count.
To Find :
The expected mass in grams of platelets in the blood sample.
Solution :
1 L of human blood contains 1.04 kg of platelets.
So, amount of platelets is 1 ml blood is :
Mass of platelets in 4.01 ml blood is :
Hence, this is the required solution.
The electron configuration for Oxygen : [He] 2s²2p⁴
<h3>Further explanation</h3>Writing electron configurations starts from the lowest to the highest sub-shell energy level. There are 4 sub-shells in the shell of an atom, namely s, p, d, and f. The maximum number of electrons for each sub-shell is
• s: 2 electrons
• p: 6 electrons
• d: 10 electrons and
• f: 14 electrons
Charging electrons in the sub-shell uses the following sequence:
<em>1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p⁶, 5s², 4d¹⁰, 5p⁶, 6s², etc. </em>
The element is Oxgen, with symbol O, and :
the atomic number=8=number of electron
the atomic mass=16
The electron configuration based on the number of electrons(for Oxygen=8), so the configuration :
or we can write with noble gas [He] 2s²2p⁴