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posledela
4 years ago
15

The freezing point of water is the same as its

Physics
2 answers:
Setler [38]4 years ago
8 0
(a): melting, ice melts at the same point where water freezes
denis23 [38]4 years ago
8 0

Answer:

A. Melting point

Explanation

Melting point is the point of temperature at which solid changes it's state to liquid while freezing point is the point of temperature at which liquid changes it's state to solid.

Melting and freezing point of water is same i.e. 0 degree centigrade and at this temperature 80 calories of heat per gram of solid ice will convert it into liquid water.

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Explain how a submarine<br> floats on the water surface<br> and dives down into water.
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Answer:

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6 0
3 years ago
A graduated cylinder.measures 15.3 mL. Convert this measurement to DaL
ololo11 [35]

Answer:

0.000153DaL  

Explanation:

We have been given:

         15.3mL to convert to DaL

DaL is a unit of volume which indicates a decaliter.

 This implies that;

             1 Da L  = 1 x 10²L

So:

               1 mL  = 1 x 10⁻³L

       So 15.3mL will give 15.3 x 10⁻³L

So;

           1 x 10²L   =  1 DaL  

      15.3 x 10⁻³L  will give \frac{15.3 x 10^{-3} }{1 x 10^{2} }   = 15.3 x 10⁻⁵DaL

Therefore, this is 0.000153DaL  

           

5 0
3 years ago
1. Why is the direction of free fall acceleration sometimes negative?
WITCHER [35]
If you define the ground as position zero and points above that to have positive altitudes, then the acceleration caused by gravity points in the negative direction. ... Gravity still acts in the downward direction. And the upward force from the floor is equal and opposite to your weight.
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Which best explains how fiber-optic technology has improved communication?
Gelneren [198K]

Answer:

B. It has allowed for faster transmission of Internet signals.

Explanation:

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8 0
3 years ago
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