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STatiana [176]
3 years ago
14

6.02 × 10^4 ÷ 5.1 × 10^6

Physics
1 answer:
swat323 years ago
3 0

Answer:

the answer is b, (the second one)

Explanation:

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If a rock on a cliff starts with 3,000 J of GPE and 0 J of KE and ends with 0 J of GPE and 5,000 J of KE, what law of physics wo
alexgriva [62]

The law of physics that this scenario would violate is the law of conservation of energy.

<h3>What is the law of conservation of energy?</h3>

The law of conservation of energy states that energy possessed by an object or physical body can neither be created nor destroyed but can only be transformed from one form to another.

This ultimately implies that, the energy possessed by the rock at the beginning must be equal to the energy possessed by the rock at the end in accordance with the law of conservation of energy.

Read more on energy here: brainly.com/question/1242059

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2 years ago
How much power does it take to lift 30.0 N 10.0 m high in 5.00 s?
Rudik [331]

Power = work/time = (Force times distance)/time

= (30N *10.0m)/5.00s = 300/5 = 60 Watts

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4 years ago
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Veronika [31]
The sound wave is 1.0 meters

8 0
3 years ago
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A rope is wrapped around a pulley many times. The pulley can be modeled as a solid disk of radius R and mass M, and a mass mA ha
aleksandr82 [10.1K]

The magnitude of the tangential acceleration of the hanging mass is 2mg/MR

<h3>Tangential acceleration of the hanging mass</h3>

The tangential acceleration of the hanging mass around the pulley is determined from the principle of conservation of angular momentum as shown below;

τ = Iα

Where;

  • I is the moment of inertia
  • α is the angular velocity

\alpha = \frac{\tau}{I} \\\\\alpha = \frac{mgR}{3/2MR^2} \\\\\alpha = \frac{2mgR}{3MR^2} \\\\\alpha = \frac{2mg}{3MR}

Where;

  • m is the hanging mass
  • M is the mass of solid disk

The tangential acceleration is calculated as follows;

a = \alpha R\\\\a = \frac{2mg}{3MR} \times R\\\\a = \frac{2mg}{3M}

Thus, the magnitude of the tangential acceleration of the hanging mass is 2mg/MR

Learn more about tangential acceleration here: brainly.com/question/11476496

4 0
3 years ago
On an aircraft carrier, a jet can be catapulted from 0 to 240 km/h in 2.10 s. If the average force exerted by the catapult is 9.
Leya [2.2K]
<h2>Answer</h2>

The answer is 29495.3 kg

<h2>Explanation</h2>

As we know, the Newton's Second Law of Motion

Force = Mass * Acceleration

F = ma

The F exerted by catapult = 9.35 * 10^5

The Time is = 2.10 s

Velocity of the catapult = 240 km/h = 66.6 m/s   (240*1000 m /3600 s)

The mass of jet = ?

First detrmine the acceleration as

{/tex}Acceleration = Velocity/Time {/tex}

Acceleration = 66.6 ms^{-1}/2.1 s

Acceleration (a) =  31.7 ms^{-2}

Rearrange the formaula as

m= F/a

m= 9.35 * 10^5 N /31.7 ms^{-2}

m = 29495.3 kg

The mass will be 29495.3 kg

4 0
4 years ago
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