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oksian1 [2.3K]
3 years ago
12

Juan lives 100 m away from Bill/ What is Juan's average speed if he reaches Bill's home in 50 s?

Physics
1 answer:
yanalaym [24]3 years ago
3 0
Data:
ΔS (Total Distance Covered<span>) = 100 m
</span>ΔT (Total time taken<span>) = 50 s
Savg (</span><span>Average Speed) = ? (m/s)
</span><span>
Formula:
</span>S_{Avg} =  \frac{\Delta\:S}{\Delta\:T}<span>

Solving:
</span>S_{Avg} = \frac{\Delta\:S}{\Delta\:T}
S_{Avg} = \frac{100}{50}
\boxed{\boxed{S_{Avg} =2\:m/s}}\end{array}}\qquad\quad\checkmark<span>

</span>

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a group of students working in a high school chemistry lab believe they have discovered a new element! how exciting! upon furthe
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Explanation:

From the experiment:

      Number of protons  = 74

      Number of neutrons  = 110

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For a neutral or uncharged atom, the number of protons is the same as the number of electrons.

The element whose number of protons or atomic number if 74 is Tungsten

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2 years ago
All valid equations in physics have consistent units. Are all equations that have consistent units valid?
sweet [91]

Answer:

c. No. An equation may have consistent units but still be numerically invaid.

Explanation:

For an equation to be corrected, it should have consistent units and also be numerically correct.

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From the above, without the dimensionless constant the equation would be numerically wrong.

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3 years ago
A spotlight on the ground shines on a wall 12 m away. If a man 2 m tall walks from the spotlight toward the building at a speed
gregori [183]

Answer:

the rate of the change of the length of the shadow is - 0.8625 m/s.

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Given the data in the question;

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Therefore, the rate of the change of the length of the shadow is - 0.8625 m/s.

The negative(-) sign means the length of the shadow decreases at a rate of 0.8625 m/s.

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