Explanation:
There are 5 kinematic equations, and 5 variables.
Each question will give you 3 variables and ask you to solve for a fourth.
To determine which equation to use, look at which variable is <em>not</em> included in the problem.
For example, if the question does not include time, then you need to use a kinematic equation that does not have t in it. That would be:
v² = v₀² + 2aΔx
Or, if the question does not include the final velocity, then you need a kinematic equation that does not have v in it. That would be:
Δx = v₀ t + ½ at²
Answer:
No. of Molecules = 18.06 x 10²³ molecules
No. of Atoms of P = 3 atoms
No. of Atoms of Na = 9 atoms
Total No. of Atoms = 24 atoms
Explanation:
<u>FOR NUMBER OF MOLECULES</u>:
<u>No. of Molecules = 18.06 x 10²³ molecules</u>
<u></u>
<u>FOR NUMBER OF P ATOMS</u>:
<u>No. of Atoms of P = 3 atoms</u>
<u></u>
<u>FOR NUMBER OF Na ATOMS</u>:
<u>No. of Atoms of Na = 9 atoms</u>
<u></u>
<u>FOR TOTAL NUMBER OF ATOMS</u>:
<u>Total No. of Atoms = 24 atoms</u>
<u></u>
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The Joule, the BTU, and the calorie are units of energy,
in the form of heat or in any other form.
The Kelvin is a unit of temperature.
Formula from physics to get the answer.
Answer:
Car A is not accelerating, but car B is accelerating
Explanation:
Car A is not accelerating because , it is moving with uniform speed in a particular direction . Therefore its velocity too is not changing .
But car B is accelerating because , though its speed is uniform but its velocity is changing due to change in direction . On a circular path , direction of speed changes every moment . Therefore it has an acceleration called centripetal acceleration . Hence car B has acceleration.
