2 years ago

During crystallisation the crystals separate out from the hot ________solution of a substance on cooling

1 answer:

6 0

Answer:

The process of separation or deposition of crystals from a hot saturated solution on gentle cooling of the solution is called 'crystallisation'.

Explanation:

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11) A sled is initially given a shove up a frictionless 35º incline. It reaches a maximum height of 2.5

Andrej [43]

Answer:

7 m/s

Explanation:

To solve this problem you must use the conservation of energy.

$K1 +U1=K2+U2$

That math speak for, initial kinetic energy plus initial potential energy equals final kinetic energy plus final potential energy.

The initial PE (potential energy) is 0 because it hasn't been raised in the air yet. The final KE (kinetic energy) is 0 because it isn't moving. This gives the following:

$KE1= \frac{1}{2}mv^{2}}$

$PE2=mgh$

K1=U2

$\frac{1}{2} mv^{2} =mgh$

Solve for v

$v=\sqrt{2gh}$

Input known values and you get 7 m/s.

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3 years ago

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emmainna [20.7K]

The energy is 3.06 electronvolts, E = 3.06eV

1eV = 1.6 * 10^-19 J

3.06 eV = 3.06* 1.6 * 10^-19 J = 4.896 * 10^-19 J

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Wewaii [24]

The correct answer is D,

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3 years ago

The momentum of a 5-kilogram object moving at 6 meters per second is-

goldfiish [28.3K]

I think the answer is 30 but I’m not sure

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The amount of energy carried by a wave and the waves maximum displacement from the rest position describe what?

Mademuasel [1]

What you are describing is Amplitude.

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