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Tasya [4]
3 years ago
6

23. Milo created the data table based on his science experiment. What was the velocity of the

Physics
1 answer:
Tems11 [23]3 years ago
8 0
6 m/s because the position of the object was increasing 6 m every second
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Two parallel square metal plates that are 1.6 cm apart and 24 cm on each side carry equal but opposite charges uniformly spread
Fiesta28 [93]

The amount of extra electrons present on the negative surface is

57.2 x 10^{10}.

Distance =1.6 cm

Side = 24 cm

Electric field = 18000 N/C

Calculating the capacitance in the metal plates is necessary.

Using the capacitance formula

C=\frac{e_{0}A }{d}

Putting the value

C = 8.85 x 10^{-12}x (24 x 10^{-2})^{2}/1.6 x 10^{-2}

C = 0.318 x 10^{-10} F

<h3>Calculation of potential</h3>

V = Ed

V = 18000 x 1.6 x 10^{-2} V

V = 288 V

<h3>Calculation of charge</h3>

Q = CV

Q = 0.318 x 10^{-10} x 288

Q = 91.54 x 10^{-10} C

Charge on the both the plates

Q = +91.54 x 10^{-10}

Q = - 91.54 x 10^{-10}

Calculation of excess electrons on the negative surface:

n = q/e

n = 91.54 x 10^{-10}/ 1.6 x 10^{-19}

n = 57.2 x 10^{10} electrons

Hence, the number of excess electrons on the negative surface is

57.2 x 10^{10}.

Learn more about capacitance here:

brainly.com/question/14746225

#SPJ4

8 0
1 year ago
When the resistance in a circuit remains constant, how are the voltage and current related?
solmaris [256]
V=IR, therefore when resistance is constant the voltage and current are directly proportional
6 0
3 years ago
Read 2 more answers
If the net force acting on an object is 100 N to the left, Are the forces unbalanced or balanced?
hodyreva [135]

Answer:

unbalanced

Explanation:

none

8 0
2 years ago
Sound travels at a speed of about 340m/s in the air. How long will it take an explosion to be heard from a distance of 20 miles
Goryan [66]

First convert the speed of sound from meters/second to miles/second:

340\,\dfrac{\mathrm m}{\mathrm s}\cdot\dfrac{3.281\,\mathrm{ft}}{1\,\mathrm m}\cdot\dfrac{1\,\mathrm{mi}}{5280\,\mathrm{ft}}=0.21\,\dfrac{\mathrm{mi}}{\mathrm s}

Then the time it takes for the sound to travel 20 miles is

\dfrac{20\,\mathrm{mi}}{0.21\,\frac{\mathrm{mi}}{\mathrm s}}=95\,\mathrm s

3 0
2 years ago
You are sitting in your car at rest at a traffic light with a bicyclist at rest next to you in the adjoining bicycle lane. As so
grigory [225]

Answer:

Explanation:

Time duration during which acceleration exists in  bicycle =

23 / 12 = 1.91 s

Time duration during which acceleration exists in car

= 47 / 8 = 5.875 s

Distance covered by bicycle during acceleration ( t = 1.91 s )

= 1/2 x 12 x (1.91)²

= 21.88 mi

Distance covered by car during this time ( t = 1.91 s )

= 1/2 x 8 x (1.91)²

7.64 mi ,

velocity of car after 1.91 s

= 8 x 1.91 = 15.28 mi/h

Let after time 1.91 , time taken by them to meet each other be t

Total distance covered by cycle = total distance covered by car

21.88 + 23 t = 7.64 + 15.28t + 4 t²

21.88 = 7.64 - 7.72t +4 t²

4 t² -7.72 t -14.24 = 0

t = 2.83 s

Total time taken

= 2.83 + 1.91

= 4.74 s

So after 4.74 s they will meet each other.

b ) Maximum distance occurs when velocity of both of them becomes equal .

Velocity after 1.91 s of bicycle

12 x 1.91 = 23 mi/h

Velocity after 1.91 s of car

8 x 1.91 = 15.28 mi/h . Let after time t , the velocity of car becomes 23

15.28 + 8t = 23

t = .965 s

So after time .965 s , car has velocity equal to that of bicycle.

The bicycle will travel a distance of

= 21.88 + .965 x 23 = 44.075 mi

car will travel a distance of

7.64 + 15.28 x .965 + .5 x 8 x .965²

= 7.64 + 14.75 + 3.72

= 26.11 mi

Distance between car and bicycle

= 44.075 - 26.11 = 17.965 mi

= 17.965 x 1760

= 31618.4 ft.

5 0
3 years ago
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