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2 years ago

12

3. As the ice melts into liquid water, what happens to the kinetic energy of the particles in the sample?

2 answers:

Pie2 years ago

8 0

Answer:

kinetic energy is added into the molecules which makes them move faster and faster until they're moving fast enough to generate heat and melt the ice cube

Explanation:

rusak2 [61]2 years ago

4 0

Answer:

As ice melts into water, kinetic energy is being added to the particles. This causes them to be 'excited' and they break the bonds that hold them together as a solid, resulting in a change of state: solid -> liquid.

Explanation:

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The magnitude of the Poynting vector of a planar electromagnetic wave has an average value of 0.939 W/m2. The wave is incident u

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The total energy is $T = 169.02 \ J$

Explanation:

From the question we are told that

The Poynting vector (energy flux ) is $k = 0.939 \ W/m^2$

The length of the rectangle is $l = 1.5 \ m$

The width of the rectangle is $w = 2.0 \ m$

The time taken is $t = 1 \ minute = 60 \ s$

The total electromagnetic energy falls on the area is mathematically represented as

$T = k * A * t$

Where A is the area of the rectangle which is mathematically represented as

$A= l * w$

substituting values

$A= 2 * 1.5$

$A= 3 \ m^2$

substituting values

$T = 0.939 * 3 * 60$

$T = 169.02 \ J$

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