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Tomtit [17]
3 years ago
9

Which of the following is true about conduction? Question 2 options: It is heat transfer through direct contact It can only occu

r in a liquid It is heat transfer in currents through a liquid It is heat transfer as a form of light
Physics
1 answer:
kramer3 years ago
3 0

Answer:

through direct contact

Explanation:

took the test!

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A mass m at the end of a spring oscillates with a frequency of 0.89 hz. when an additional 603 g mass is added to m, the frequen
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The solution for this problem:

Given:

f1 = 0.89 Hz

f2 = 0.63 Hz

Δm = m2 - m1 = 0.603 kg 


The frequency of mass-spring oscillation is: 
f = (1/2π)√(k/m) 
k = m(2πf)² 

Then we know that k is constant for both trials, we have: 
k = k 


m1(2πf1)² = m2(2πf2)² 

m1 = m2(f2/f1)² 


m1 = (m1+Δm)(f2/f1)² 


m1 = Δm/((f1/f2)²-1)

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= 0.609 kg or 0.61kg or 610 g

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3 years ago
A stone dropped from the top of a 80m high building strikes the ground at 40 m/s after falling for 4 seconds. The stone's potent
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Answer: c. 40m

Explanation:

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Answer:

a. Near both the equator and the prime meridian.

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