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dem82 [27]
4 years ago
8

I only need help on #15! Thanks!

Physics
1 answer:
Vanyuwa [196]4 years ago
7 0

I would have to say that 'B' and 'D' are both correct.

Increasing the voltage that you're using to operate a circuit
causes the current in the circuit to increase.  But current is
just the number of electrons that are flowing through it.  So
right there, you have the increase in the number of charges.

Now, every electron that flows through the circuit gives up
some energy on the way.  So if there are more electrons
making the trip, then more energy has been put into the circuit.

Jessica, I absolutely love your printing.
I wish I could print so clearly.


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State the relationship between the mass of trolley and acceleration of the trolley?
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<em>Answer</em><em>:</em><em> </em> The complementary relationship indicated by the Newton's second law...

For a given applied force the acceleration of the trolley is inversely proportional to it's mass.

5 0
3 years ago
Sally is concerned about the X-ray images her dentist plans to take of her teeth. She has read that X-rays can cause tissue effe
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Answer:

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A plasma is a gas of ionized (charged) particles. When plasma is in motion, magnetic effects "squeeze" its volume, inducing inwa
zzz [600]

Answer:

 a

    The volume charge density is  \rho = nq

b

    The surface charge density is  \sigma =    n^{\frac{2}{3} } q

Explanation:

From the question we are told that

    The radius is  R

     The length is L

       The velocity is  v

        The number of ions per unit volume is  n

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The volume charge density is mathematically represented as

      \rho =  nq

The surface charge density is mathematically represented as

    \sigma =  \rho n^{\frac{1}{3} }

substituting for  \rho

     \sigma =  n *   n^{\frac{1}{3} } q

     \sigma =    n^{\frac{2}{3} } q

5 0
3 years ago
7 the density of the american white oak tree is 752 kilograms per cubic meter. if the trunk of an american white oak tree has a
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First, we determine the volume of the trunk by finding first the radius from the circumference through the equation,

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<span>                                                            V = πr2h</span>

<span>                                                V = π(0.716 m)2(8m) = 12.9 m3</span>

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