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Hatshy [7]
3 years ago
8

A battery establishes a voltage V on a parallel-plate capacitor. After the battery is disconnected, the distance between the pla

tes is doubled without loss of charge. Accordingly:_____.
a. stay same
b. increases
c. decreases
d. the capacitance decreases and the voltage between the plates increases.
Physics
1 answer:
disa [49]3 years ago
4 0

Answer:

d.

Explanation:

Since, the capacitance( decreases )

therefore voltage between the plates(increases ).

Hence, option d is correct.

C =εA/d.

d is doubled, therefore  C decrease ( inverse relation).

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A. Two point charges totaling 7.50 µC exert a repulsive force of 0.100 N on one another when separated by 0.911 m. What is the c
andriy [413]

coulomb's law

f repulsive = q1q2/4 pi epsilon nought r squared

0.1= q1q2/4 pi epsilon nought 0.911 squared

q1+q2= 7.50 µC

0.1= q1(7.5µC-q1)/4 pi epsilon nought 0.911 squared

solve for q1

7 0
3 years ago
How many grams does 15.58 L of gasoline weigh? Gasoline has a density of 0.74 g/mL
Korolek [52]

We are given volume of gasoline = 15.58 L and

Density = 0.74 g/mL.

Density is given in grams(g) per milliliter (mL). So, we need to convert given volume in mL also.

We know, 1 litre = 1000 milliliters

Therefore, 15.58 L = 15.58 * 1000 mL = 15580 mL

We could rewrite,

Volume of gasoline = 15580 mL.

Formula for density is..

Density (ρ)= \frac{Mass}{ Volume}

Plugging values in formula,

0.74  g/mL = \frac{Mass}{15580 \ mL}

Muliplying both sides by 15580.

0.74 g/mL * 15580mL =\frac{Mass}{15580 \ mL} * 15580mL

11529.2g = mass.

Therefore, 11529.2g grams does 15.58 L of gasoline weigh.




5 0
3 years ago
Find the potential energy of a 2kg ball 15m in the air
Paraphin [41]
<span>The ball's gravitational potential energy at its peak height was 0.4 joules, and its .... Ignore air resistance and determine (a) the kinetic energy at 28.1 m, (b) the .... At position B, just before it lands, it is falling at 15m/s. a) if the blocks potential ...</span>
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3 years ago
What is the characteristic of a Matrix Transpose
yulyashka [42]

Answer:

columns are converted into rows , and rows are converted into columns

5 0
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When the flashlight is in the air and the refracted ray enters the water, how does the angle of refraction compare with the angl
tigry1 [53]

Answer:

The refracted angle will be less than the angle of incidence and the speed of light is slower in the new medium (which is water) and is closer to the normal.

Try remembering this by using FST SFA (Fast Sofa)

                                             Fast -> Slow = Towards the normal

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4 0
3 years ago
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