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alukav5142 [94]
3 years ago
11

What is the scientific notation that best represents the

Physics
2 answers:
attashe74 [19]3 years ago
7 0

Answer:

First question its D 6.84 x 10^9 m      Second is B 1.43 x 10^-10 g

Explanation:

avanturin [10]3 years ago
5 0

6.84 x 10^9 m  is your answer :)


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You have to design a loop-the-loop for a new amusement park so that when each car passes the top of the loop inverted (upside-do
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A vector quantity must include both magnitude and direction. Which measurement is a vector quantity? A) the rain accumulation at
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Answer:

B)The motion of water in an ocean current

Explanation:

With respect to measurements, a vector has both a magnitude and a direction. The first three examples (maximum height of a hill, air temperature, and rain accumulation) are magnitudes only. The fourth example (motion of water in an ocean current) is a vector, because it has a magnitude (speed) and a direction (with the current).

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Stars combine Hydrogen to make Helium during nuclear fusion. Living things are made of heavier elements like Carbon, Oxygen, Iro
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3 years ago
You are raising up a big bucket of water from a 25.9 m deep well. The combined mass of the water and the bucket is 13.9 kg. The
Mars2501 [29]

The total work done is  5980 Joules and the power expended is 57 Watts.

<h3>What is work done?</h3>

The work done is the work done in the gravitational field as the bucket is raised up Thus work required to remove the bucket Wb;

Wb = 13.9 kg * 25.9 m * 9.8 m/s^2 = 3530 Joules

Height of the center of mass of chain = 25.9 / 2 = 12.95 m  

Work done by the chain Wc;

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Total work = 3530 + 2450 = 5980 Joules

Power expended = W / t = 5980 J / 105 sec = 57 J/s = 57 Watts

Learn more about work done:brainly.com/question/13662169

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3 0
2 years ago
How much heat is evolved when 1234 g of water condenses to a liquid at 100.°c?
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During the phase transition vapour --> liquid water, the temperature of the water does not change; the molecules of water release heat and the amounf of heat released is equal to
Q=mL_e
where
m is the mass of the water
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For water, the latent heat of evaporation is L=2257 kJ/kg, while the mass of the water is
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so, the amount of heat released in the process is
Q=mL_e = (1.234 kg)(2257 kJ/kg)=2785 kJ
6 0
3 years ago
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