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3 years ago

Which statements accurately describe the motion map?

Physics

2 answers:

ahrayia [7]3 years ago

3 0

Answer: B & D

Explanation:

Naddika [18.5K]3 years ago

3 0

B AND D YOUR WELCOME CUZ

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Answer these please.

PolarNik [594]

Explanation:

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5 0

4 years ago

Projectile motion 1 and 2

shtirl [24]

1. Vf =62.57778m/s

h=62.5778

theta final=45°????

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4 years ago

In an experiment replicating Millikan’s oil drop experiment, a pair of parallel plates are placed 0.0200 m apart and the top pla

lianna [129]

Answer: See below

Explanation:

<u>Given:</u>

The potential between plates, V = 240 V

Distance between plates, d = 0.02 m

The mass of drop, m = 2x10^-11

Charge on electron, e = 1.6x10^-19

Part (a)

The free-body diagram is attached below

Part (b)

The electric field is given by,

$E=\frac{V}{d}$

On applying force balance, the force on oil drop is equal to the weight of the oil,

$\begin{aligned}F_{E} &=m g \\q E &=m g \\q \frac{V}{d} &=m g \\q &=\frac{m g d}{V}\end{aligned}$

Substituting the given values in the above equation,

$\begin{aligned}&q=\frac{2 \times 10^{-11} \mathrm{~kg} \times 9.8 \mathrm{~m} / \mathrm{s}^{2} \times \frac{1 \mathrm{~N}}{1 \mathrm{~kg} \cdot \mathrm{m} / \mathrm{s}^{2}} \times 0.02 \mathrm{~m}}{240 \mathrm{~V} \times \frac{1 \mathrm{~N} \cdot \mathrm{m} / \mathrm{C}}{1 \mathrm{~V}}} \\&q=1.63 \times 10^{-14} \mathrm{C}\end{aligned}$

Therefore, the charge on the oil drop is 1.63x10^-14 C

Part (c)

There will be an excess of electrons on the oil drop.

The number of electrons on oil drop can be calculated as,

$\begin{aligned}q &=n e \\1.63 \times 10^{-14} \mathrm{C} &=n \times 1.6 \times 10^{-19} \mathrm{C} \\n &=1.01 \times 10^{5}\end{aligned}$

Therefore, the number of excess electrons is 1.01x10^5

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2 years ago

Calculate the average speed between seconds 2 and 4 PLS HELP!?

zavuch27 [327]

1449 is the answer to the question

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3 years ago

If earth had no atmosphere would a falling object ever reach terminal velocity

Bond [772]

Terminal velocity is caused by friction between an object and the atmosphere, causing it to only go so fast. If there is no atmosphere, there is no friction between the object, so it will accelerate forever.

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3 years ago