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nordsb [41]
3 years ago
15

A physics student swings a pail of water in a vertical circle 1.0 m in radius at a constant speed. If the water is NOT to spill

on him/her: (A) calculate the minimum speed of the pail of water (B) calculate the maximum time per revolution (period) of the swing
Physics
1 answer:
love history [14]3 years ago
7 0

Answer:

(A) 3.1 m/s

(B) 2.0 s

Explanation:

At the minimum speed, the force of gravity equals the centripetal force.

mg = m v² / r

v = √(gr)

v = √(9.8 m/s² × 1.0 m)

v = 3.1 m/s

The time is the circumference divided by the speed.

t = (2π × 1.0 m) / (3.1 m/s)

t = 2.0 s

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asambeis [7]

Answer:

B. 25 m/s/s

Explanation:

Centripetal acceleration is the square of the tangential velocity divided by the radius of curvature.

a = v² / r

Given v = 10 m/s and r = 4 m:

a = (10 m/s)² / 4 m

a = 25 m/s²

4 0
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When cleaning a storage battery you can use a solution of water and ammonia or solution of water and
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a plane travels 204 km, northeast in 15.0 minutes. It also increases elevation by 1.6 km, upward in the same amount of time. Wha
LUCKY_DIMON [66]

Answer:

230 m/s northeast, 1.8 m/s up

Explanation:

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15.0 minutes = 900 seconds

Velocity = Distance / Time

= 204000 / 900

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1.6km = 1600 metres

Velocity = 1600 / 900

= 1.8 m/s up (to 2 sf.)

Read more on Brainly.com - brainly.com/question/13863590#readmore

5 0
3 years ago
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a 72kg person is standing on a bathroom scale (calibrated in newtons). what is the reading of the scale when the acceleration is
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Answer:

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Zanzabum

Answer:

A.

Explanation:

because the carbonic acid reacts to the limestone.

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