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katrin [286]
3 years ago
14

Which of the following scientists did not contribute scientific discoveries to physical science? A) Isaac Newton B) Marie Curie

C) Gregor Mendel
Physics
1 answer:
lianna [129]3 years ago
3 0

Answer:

It is Gregor Mendel because he was a Catholic Augustinian monk and naturalist

Explanation:

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4N

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because the net force is greater in the right direction

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About how much of the United States' electricity is produced by nuclear reactors?​
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19% total electrical output

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Which statement best summarizes the theory of evolution by natural selection?
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c is the one that makes the most sense

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How did people studying lunar eclipses learn that Earth is round?
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A child whirls a 3.00 kg ball on a string .50 m from the axis of rotation in a horizontal circle. The ball makes 1 revolution in
melamori03 [73]

Answers:

a) 0.5 m/s^{2}

b) 1.5 N

Explanation:

a) The centripetal acceleration a_{c} of an object moving in a uniform circular motion is given by the following equation:  

a_{c}=\omega^{2} r  

Where:

\omega=1 \frac{rev}{s} is the angular velocity of the ball

r=0.5 m is the radius of the circular motion, which is equal to the length of the string

Then:

a_{c}=(1 \frac{rev}{s})^{2} 0.5 m  

a_{c}=0.5 m/s^{2} This is the centripetal acceleration of the ball

b) On the other hand, in this circular motion there is a force (centripetal force F) that is directed towards the center and is equal to the tension (T) in the string:

F=T=m. a_{c}

Where m=3 kg is the mass of the ball

Hence:

T=(3 kg)(0.5 m/s^{2})

T=1.5 N This is the tension in the string

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