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dusya [7]
3 years ago
14

Does hot water or cold water boil faster is that repeated observations using models are controlled experiments

Physics
1 answer:
lozanna [386]3 years ago
4 0
Hot water boils faster since its already hot and dosnt take much more time to get as hot
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A 100-year flood is the flooding elevation that has a one percent chance of happening each year. Why is the name misleading
fenix001 [56]
One percent annual chance of flooding does not mean it will happen with absolute certainty once every 100 years. Just that the expected value of a flood in 100 years is one.

As an example, heads has a 50% chance of happening every coin flip. With 2 coin flips, the expected value is one. However, it would be a misnomer to call "heads" a 2-flip outcome.
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4 years ago
Flower bed is filled with five types of flowers. Which placement of the flowers represents the highest entropy?
mars1129 [50]

Answer:

B

Explanation:

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3 years ago
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Why is visible light safe to humans ?
MariettaO [177]

Explanation:

Visible light is the range of electromagnetic waves that humans can see. Anything that glows or gives off light makes waves of what we call visible light. The sun, light bulbs, candles and fire are all things that people automatically think of when it comes to light, but visible light comes from many sources and in many colors. Some other sources of visible light include: television and computer screens, glow sticks, and fireworks

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First, you will investigate purely vertical motion. The kinematics equation for vertical motion (ignoring air resistance) is giv
Ivenika [448]

Answer:

2.85 s .

Explanation:

y(t) = y(0) + v₀t + 1/2 gt²

y(t) is vertical displacement , y(0) is initial position , v₀ is initial velocity and t is time required to make vertical displacement and g is acceleration due to gravity.

Here  y(0) is zero , v₀ = 14 m/s , g = 9.8 m s⁻² , y(t ) = 0 , as the pumpkin after time t comes back to its initial position, that is ground .

We shall take v₀ as negative as it is in upward direction and g as positive as it acts in downward direction

Put the values in the equation above,

0 = 0 - 14t + 1/2 x 9.8 t²

14 t = 1/2 x 9.8 t²

t = 28 / 9.8

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A disk made of many small particles of Rock and ice in orbit around a planet is called
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