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4 years ago

A stone is dropped off a cliff and is in free fall. Every second that the stone is falling, its acceleration...

Physics

2 answers:

Andrei [34K]4 years ago

8 0

If you consider down to be the positive direction than the stone's acceleration is 9.8m/s^2

Anton [14]4 years ago

5 0

Answer:and it’s speed are constant

Explanation:

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Which of the following best represents an isolated system?

saul85 [17]

Answer:

D.Outer space is answer

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3 years ago

What is the magnitude (in N/C) and direction of an electric field that exerts a 3.50 ✕ 10−5 N upward force on a −1.55 µC charge?

IRISSAK [1]

Answer:

The magnitude of electric field is 22.58 N/C

Solution:

Given:

Force exerted in upward direction, $\vec{F_{up}} = 3.50\times 10^{- 5} N$

Charge, Q = $- 1.55\micro C = - 1.55\times 10^{- 6} C$

Now, we know by Coulomb's law,

$F_{e} = \frac{1}{4\pi\epsilon_{o}\frac{Qq}{R^{2}}$

Also,

Electric field, $E = \frac{1}{4\pi\epsilon_{o}\frac{q}{R^{2}}$

Thus from these two relations, we can deduce:

F = QE

Therefore, in the question:

$\vec{E} = \frac{\vec F_{up}}{Q}$

$\vec{E} = \frac{3.50\times 10^{- 5}}{- 1.55\times 10^{- 6}}$

$\vec{E} = - 22.58 N/C$

Here, the negative side is indicative of the Electric field acting in the opposite direction, i.e., downward direction.

The magnitude of the electric field is:

$|\vec{E}| = 22.58\ N/C$

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3 years ago

As the wavelength of electromagnetic radiation increases. true or false

KIM [24]

Answer:

Explanation:

The energy and the frequency of electromagnetic radiation inversely proportional to the frequency of radiation.

So, as the wavelength increases, the energy and the frequency decreases.

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3 years ago

Suppose we consider the system of the three capacitors as a single "equivalent" capacitor. Given the charges of the three indivi

emmainna [20.7K]

Answer:

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Explanation:

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3 years ago

What structure help support plants

natka813 [3]

The cell structure that helps support plants is the cell wall. It provides a shell structure around the main cell of the plant and its layers so then it will have the adequate amount of strength that it needs. It's also one of the reasons why even non-woody plants such as herbs have the strength of support itself.

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4 years ago

Read 2 more answers