3 years ago

Organized elements into four groups based on properties

Physics

1 answer:

Flauer [41]3 years ago

4 0

Answer:

Lavoisier

Explanation:

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Two bodies of masses 1000kg and 2000kg are separated 1km which is the gravitational force between them

denpristay [2]

Answer:

1.33×10⁻¹⁰ N

Explanation:

F = GMm / r²

where G is the gravitational constant,

M and m are the masses of the objects,

and r is the distance between them.

F = (6.67×10⁻¹¹ N/m²/kg²) (1000 kg) (2000 kg) / (1000 m)²

F = 1.33×10⁻¹⁰ N

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3 years ago

A ball of 10kg falls from rest from a height of 150m, Neglating air resistance, calculate its kinetic energy after falling a dis

GaryK [48]

Answer: $3920\ J$

Explanation:

Given

mass of ball m=10 kg

It is placed at a height of 150 m

It is dropped from the height and allowed to free fall for 40 m

Velocity acquired by the ball during this fall is given by $v^2-u^2=2as$

Insert u=0, a=g

$\Rightarrow v^2-0=2\times 9.8\times 40\\\Rightarrow v=\sqrt{784}\\\Rightarrow v=28\ m/s$

Kinetic energy at this instant

$K.E.=\dfrac{1}{2}\times 10\times 28^2\\\\\Rightarrow K.E.=3920\ J$

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2 years ago

True or False. A loud noise gives off less energy than a quiet noise.

zvonat [6]

Answer:

true

Explanation:

hope it helped you

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Explain why time is an independent and position is a dependent variable in a position versus time graph.

agasfer [191]

Time can be changed in a graph but the position stay the same

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3 years ago

Arrange the step in order to describe what happens to a liquid when it is heated

solong [7]

Answer:

The liquid gains thermal energy. The particles of liquid move faster. The space between the liquid particles increases. The liquid changes to a gas

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3 years ago