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tatyana61 [14]
3 years ago
12

An aerobatic airplane pilot experiences weightlessness as she passes over the top of a loop-the-loop maneuver. The acceleration

of gravity is 9.8 m/s 2 . If her speed is 450 m/s at this time, find the radius of the loop. Answer in units of km
Physics
1 answer:
Debora [2.8K]3 years ago
3 0

Answer:

The radius of the loop is  20.66 km

Explanation:

let the radius of the loop be r

mass of airplane is m

At the top, the pilot experiences two radial forces, which are

1) Gravitational force is  mg

2) Centrifugal forces mv²/r out of the center

When the pilot experiences no weight,

then, mg = mv²/r

r = v² / g

 = 450² / 9.8

 = 20.66 x 10³3

 = 20.66 km

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tigry1 [53]

Answer:

C

Explanation:

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For answer B. The object would would not stop their motion. In order for the object to lose energy, it would have to transfer it through friction or through its interaction with a gravitational field.

For answer D. No energy is "required" to maintain constant motion unless the object is willingly fighting against a resistive force like friction or a graviational well.

8 0
2 years ago
What type of interaction allows the sidewalk to heat up and cook the egg? 
Bogdan [553]

Answer:

Adsorption

Explanation:

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7 0
3 years ago
Read 2 more answers
The distance between two particles is 2 centimeters. If the distance is increased to 4 centimeters, the force will be ?
postnew [5]

Answer:

The new force is 1/4 of the previous force.

Explanation:

Given

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Required

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The new force (F2) is

F_2 = \frac{kq_1q_2}{r_2^2}

Substitute 4 for r2

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2 years ago
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777dan777 [17]
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So A fold is a Bend? in a rock. Maybe.

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3 years ago
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