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Helen [10]
3 years ago
13

Which of the following is an example of potential energy? View Available Hint(s) Which of the following is an example of potenti

al energy? a hot cup of coffee the mercury rising within a thermometer a bowling ball placed on the top shelf of a closet waves crashing against the shoreline
Physics
1 answer:
Brums [2.3K]3 years ago
4 0

Answer:

a bowling ball placed on the top shelf of a closet.

Explanation:

Potential energy is the energy that is stored in an object due to its position relative to some zero position. An object possesses gravitational potential energy if it is positioned at a height above (or below) the zero height.

Mathematically,

Potential energy, PE = M × g × h

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A particle of charge Q is fixed at the origin of an xy coordinate system. At t = 0 a particle (m = 0.959 g, q = 5.84 µC is locat
NemiM [27]

Answer:

8.66\times 10^{-6}\ C or 8.66\ \mu C.

Explanation:

<u>Given:</u>

  • Charge on the particle at origin = Q.
  • Mass of the moving charged particle, \rm m = 0.959\ g = 0.959\times 10^{-3}\ kg.
  • Charge on the moving charged particle, \rm q = 5.84\ \mu C = 5.84\times 10^{-6}\ C.
  • Distance of the moving charged particle from first at t = 0 time, \rm r=20.7\ cm = 0.207\ m.
  • Speed of the moving particle, \rm v = 47.9\ m/s.

For the moving particle to circular motion, the electrostatic force between the two must be balanced by the centripetal force on the moving particle.

The electrostatic force on the moving particle due to the charge Q at origin is given by Coulomb's law as:

\rm F_e = \dfrac{kqQ}{r^2}.

where, \rm k is the Coulomb's constant having value \rm 9\times 10^9\ Nm^2/C^2.

The centripetal force on the moving particle due to particle at origin is given as:

\rm F_c = \dfrac{mv^2}{r}.

For the two forces to be balanced,

\rm F_e = F_c\\\dfrac{kqQ}{r^2}=\dfrac{mv^2}{r}\\\Rightarrow Q = \dfrac{mv^2}{r}\times \dfrac{r^2}{kq}\\=\dfrac{mv^2r}{kq}\\=\dfrac{(0.959\times 10^{-3})\times (47.9)^2\times (0.207)}{(9\times 10^9)\times (5.84\times 10^{-6})}\\=8.66\times 10^{-6}\ C\\=8.66\ \mu C.

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Please post detailed answers to the following questions. Please use complete sentences. What are some of the challenges that you
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The fact that the stars are very far from Earth, one can't fully understand the stars as it would require hundred of years to closely travel from earth to the stars because it is located million miles away from the Earth. Aside from its location, the stars are also hard to closely study because it emits lights that are harm for people when exposed longer. </span>
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The voltage across a membrane forming a cell wall is 72.7 mV and the membrane is 9.22 nm thick. What is the magnitude of the ele
Blizzard [7]

Answer:

The  magnitude of the  electric field intensity is  E =  7.89  *10^{6} \ V/m

Explanation:

From the question we are told that

    The  voltage is  \epsilon     =  72.7 \ mV  =  72.7 *10^{-3}  V

    The  thickness of the membrane is  t =  9.22 \ nm  =  9.22 *10^{-9} \ m

     

Generally the electric field intensity is mathematically represented as

                E =  \frac{\epsilon }{t}

 substituting values

                E =  \frac{72.7 *10^{-3} }{9.22 *10^{-9}}

                E =  7.89  *10^{6} \ V/m

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3 years ago
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