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1 year ago

Please help today exam

Physics

1 answer:

Alex Ar [27]1 year ago

6 0

Answer:

The answer is given in the picture

Explanation:

PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT PLEASE let

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Two large, flat, horizontally oriented plates are parallel to each other, a distance d apart. Half-way between the two plates th

fgiga [73]

Answer:

Explanation:

Let the potential difference between the plate is V . Then in the first case

Electric field E between plate

E₁ = V / d

where d is separation between plate

When the plate separation becomes d / 2

Electric field E between plate

E₂ = V / d /2

= 2 V / d =2E₁

Or twice the earlier field

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2 years ago

A constant force of 3.2 N to the right acts on a 18.2 kg mass for 0.82 s. (a) Find the final velocity of the mass if it is initi

zheka24 [161]

Explanation:

The given data is as follows.

F = 3.2 N, m = 18.2 kg,

t = 0.82 sec

(a) Formula for impulse is as follows.

I = Ft = $\Delta P$

Ft = $m(v_{f} - v_{i})$

or, $v_{f} = \frac{Ft}{m} + v_{i}$

Putting the given values into the above formula as follows.

$v_{f} = \frac{Ft}{m} + v_{i}$

= $\frac{3.2 \times 0.82}{18.2} + 0$

= 0.144 m/s

Therefore, final velocity of the mass if it is initially at rest is 0.144 m/s.

(b) When velocity is 1.85 m/s to the left then, final velocity of the mass will be calculated as follows.

Ft = $m(v_{f} - v_{i})$

or, $v_{f} = \frac{Ft}{m} + v_{i}$

= $\frac{3.2 \times 0.82 sec}{18.2} - 1.85$

= -1.705 m/s

Hence, we can conclude that the final velocity of the mass if it is initially moving along the x-axis with a velocity of 1.85 m/s to the left is 1.705 m/s towards the left.

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2 years ago

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Answer:

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Explanation:

Hope it helps

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2 years ago