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Ber [7]
4 years ago
11

The source of energy that keeps the Sun shining today is _________.

Physics
1 answer:
Reil [10]4 years ago
6 0

The source of energy that keeps the Sun shining today is _________.

<u>Is nuclear fusion</u>

~Hope this answers your question!~

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Calculate the average speed of an automobile that travels 60km east and then 80km north in two hours
lbvjy [14]
We need to calculate speed , so we don't need to consider direction.
speed =distance/time
=(80+60)/2
=70.

But if we were to calculate velocity,we would need to consider the direction.
The direction of resultant displacement would be in north east direction with displacement
=√60^2 +80^2
=100km

The average velocity=100/2=50kmph
8 0
3 years ago
I need help with this answer
ololo11 [35]
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6 0
3 years ago
Need help asap if I fail this one I fail my grade so please tell me the right awser
bazaltina [42]
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6 0
3 years ago
A spring has a force constant k, and an object of mass m is suspended from it. The spring is cut in half and the same object is
kenny6666 [7]

Answer:

f2/f1 = \sqrt{2}

Explanation:

From frequency of oscillation

f = 1/2pi *\sqrt{k/m}

Initially with the suspended string, the above equation is correct for the relation, hence

f1 = 1/2pi *\sqrt{k/m}

where k is force constant and m is the mass

When the spring is cut into half, by physics, the force constant will be doubled as they are inversely proportional

f2 = 1/2pi *\sqrt{2k/m}

Employing f2/ f1, we have

f2/f1 = \sqrt{2}

3 0
3 years ago
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