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3 years ago

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Which planets can never be seen at midnight? A. The Superior planets. B. The Inferior planets C. All planets can be seen at midn

ight if you wart D. No planets can be seen at midnight enough.

1 answer:

sweet-ann [11.9K]3 years ago

7 0

Answer:

A

Explanation:

Superior planets are further away from the sun than the Inferior planets making the superior planets easier to see at midnight.

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Does the accuracy of a measurement made always depend on the precision of the instrument used to make the measurement? Why or Wh

mina [271]

Answer:

B

Explanation:

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3 years ago

What is the magnitude of the momentum of a 3400 kg airplane traveling at a speed of 450 miles per hour?

Vitek1552 [10]

Answer:

The magnitude of momentum of the airplane is $6.83\times 10^5\ kg-m/s$ .

Explanation:

Given that,

Mass of the airplane, m = 3400 kg

Speed of the airplane, v = 450 miles per hour

Since, 1 mile per hour = 0.44704 m/s

v = 201.16 m/s

We need to find the magnitude of momentum of the airplane. It is given by the product of mas and velocity such that,

$p=mv$

$p=3400\ kg\times 201.16 \ m/s$

$p=683944\ kg-m/s$

or

$p=6.83\times 10^5\ kg-m/s$

So, the magnitude of momentum of the airplane is $6.83\times 10^5\ kg-m/s$ . Hence, this is the required solution.

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2 years ago

Read 2 more answers

A ___________ is how strong the push or pull is

KatRina [158]

The answer is force

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2 years ago

A parallel plate capacitor is created by placing two large square conducting plates of length and width 0.1m facing each other,

borishaifa [10]

Answer:

8.854 pF

Explanation:

side of plate = 0.1 m ,

d = 1 cm = 0.01 m,

V = 5 kV = 5000 V

V' = 1 kV = 1000 V

Let K be the dielectric constant.

So, V' = V / K

K = V / V' = 5000 / 1000 = 5

C = ε0 A / d = 8.854 x 10^-12 x 0.1 x 0.1 / 0.01 = 8.854 x 10^-12 F

C = 8.854 pF

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3 years ago

action and reaction are equal in magnitude and opposite in direction then why do they not balance each other.

NeX [460]

Answer:

Newton’s third law of motion states that every action has an equal and opposite reaction. This indicates that forces always act in pairs. Reaction forces are equal and opposite, but they are not balanced forces because they act on different objects so they don’t cancel each other out.

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2 years ago