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zavuch27 [327]
4 years ago
14

When the force on an object increases, so does its

Physics
1 answer:
son4ous [18]4 years ago
5 0
So does it's Acceleration
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A cup of mass 0.4 kg with its base radius of 4 cm is kept on a table. Calculate the pressure exerted by the cup on the table.​
madam [21]

Answer:

779.87 N/m²

Explanation:

Pressure = Force (F) / Area (A)

Recall :

Force = ma ; mass * acceleration due to gravity

a = 9.8 m/s² ; mass = 0.4kg

Force, F = 0.4 * 9.8 = 3.92 N

Area = πr² ; r = Radius = 4cm = 4 / 100 = 0.04 m

Area = π0.04² = 0.0050265 m²

Hence,

Pressure = 3.92 / 0.0050265

Pressure = 779.86670 N/m²

Pressure = 779.87 N/m²

5 0
3 years ago
A capacitor is constructed of two large, identical, parallel metal plates separated by a small distance d. A battery fully charg
Alja [10]

The capacitance of a capacitor of a parallel plate is given by:

C=\frac{kA\cdot\epsilon_o}{d}

Where:

\begin{gathered} \epsilon_o=_{\text{ }}Vacuum_{\text{ }}permittivity \\ k=_{\text{ }}Dielectric_{\text{ }}constant=2 \\ A=_{\text{ }}Area_{\text{ }}of_{\text{ }}the_{\text{ }}plates \\ d=_{\text{ }}distance_{\text{ }}betwen_{\text{ }}the_{\text{ }}plates \end{gathered}

We also know:

\begin{gathered} Q=\frac{q}{V} \\ so\colon \\ \frac{q}{V}=\frac{kA\cdot\epsilon_o}{d} \\ V=\frac{qd}{kA\cdot\epsilon_o} \\ if \\ k=2 \\ V=\frac{1}{2}(\frac{qd}{kA\cdot\epsilon_o}) \end{gathered}

As we can see the voltage halves

And since:

\begin{gathered} E=\frac{V}{d} \\ W=qV \end{gathered}

We can conclude that electric field and also the energy halve

5 0
1 year ago
What is Yusef most likely finding?
Ratling [72]

Explanation:

yusef adds all of the values in his data set and then divide by the number of values in the set. the actual density of iron is 7.874 g/ml .

4 0
3 years ago
Why can someone standing behind a mirror not see the image?
ANTONII [103]

Answer:

The image behind the mirror is called a virtual image because it cannot be projected onto a screen—the rays only appear to originate from a common point behind the mirror. If you walk behind the mirror, you cannot see the image, because the rays do not go there

4 0
3 years ago
What is needed in order to create a magnetic field
Karolina [17]

magnet

is that a multiple choice question?

5 0
3 years ago
Read 2 more answers
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