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OleMash [197]
3 years ago
13

a 1 kg emery stone measuring 20 cm redium, is rotating with an angular speed of 39 revolutions per minute, when the motor is tur

ned off. What tangent force is applied to the wheel so that it stops at 10 revolutions. a. Answer: 12,24 Rand/s b. Answer:13,24 Rand/s c. Answer: 10,4 Rand/s d. Answer: 124 Rand/s
Physics
1 answer:
musickatia [10]3 years ago
3 0

Answer: 13,24

Explanation:

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VLD [36.1K]

Answer:

Option C

Explanation:

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If we use wide wire we increase the area of cross section so resistance decreases

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2 years ago
Explain what nuclear fusion is in the role it plays in Stars. DO NOT LOOK UP ANSWERS​
Aloiza [94]

Answer:

Stars are powered by nuclear fusion in their cores, mostly converting hydrogen into helium. The production of new elements via nuclear reactions is called nucleosynthesis. A star's mass determines what other type of nucleosynthesis occurs in its core (or during explosive changes in its life cycle).

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Vanyuwa [196]

Answer:

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4 0
2 years ago
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An object of mass m is traveling in a circle with centripetal force Fc. If the velocity of the object is v, what is the radius o
borishaifa [10]

Hi there!

Recall the equation for centripetal force:
F_c = \frac{mv^2}{r}

We can rearrange the equation to solve for 'r'.

Multiply both sides by r:
r * F_c = mv^2

Divide both sides by Fc:
\boxed{ r= \frac{mv^2}{F_c}}

7 0
3 years ago
HELP DUE TONIGHT<br><br> What is friction? How does friction affect the motion of an object?
hram777 [196]

Answer:

Friction always acts in the direction opposing motion. This means if friction is present, it counteracts and cancels some of the force causing the motion (if the object is being accelerated).

Explanation:

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.

3 0
3 years ago
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