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ra1l [238]
3 years ago
10

Bena thinks that dissolving more salt in water causes the mixture’s freezing temperature to change.

Physics
2 answers:
ValentinkaMS [17]3 years ago
4 0

Answer:

ok im not 100% sure but i think it would be A or C

Explanation:

i am so sorry if im wrong :(

IRISSAK [1]3 years ago
3 0

Entropy and the second Law of Thermodynamics


Dissolving salt into water lowers the temperature which the water freezes, or at which the ice melts

Hope I helped! (:

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Pachacha [2.7K]

Answer:

176.9N

Explanation:

The following data were given

wire length,L=37cm=0.37m

linear density=18g/m

tube length,=192cm=1.92m,

speed of sound,v=343m/s

Since it is an open-closed tube, the second harmonic frequency is expressed as

f_{3}=3(\frac{v}{4l} )\\f_{3}=3(\frac{343}{4*1.92})\\f_{3}=133.98Hz

The relationship between the tension,  linear density and second harmonic frequency is expressed as

f_{3}=\frac{1}{2l_{w}}\sqrt{\frac{T}{\alpha } } \\T=(f_{3}*2l_{w})^{2}\alpha \\T=(133.984*2*0.37)^{2}*18*10^{-3}\\T=176.9N

7 0
3 years ago
Classical conditioning requires _____.
LekaFEV [45]
I would say A classical conditioning definitely demands a pairing of two stimuli
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5 0
2 years ago
Read 2 more answers
A (an) __helps lessen the effects of thermal pollution
Hunter-Best [27]

Explanation:

The following measures can be taken to prevent or control high temperature caused by thermal pollution:

1. Heated water from the industries can treated before discharging directly to the water bodies.

2. Heated water from the industries can be treated by the installation of cooling ponds and cooling towers.

3. Industrial treated water can be recycled for domestic use or industrial heating.

4. Through artificial lakes: In this lake Industries can discharge their used or heated water at one end and water for cooling purposes may be withdrawn from the other end. The heat is eventually dissipated through evaporation.

4 0
3 years ago
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Harrizon [31]

Answer:

C

Explanation:

5 0
3 years ago
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A sheet of gold leaf has a thickness of 0.125 micrometer. A gold atom has a radius of 174pm. Approximately how many layers of at
Olegator [25]

Answer:

719

Explanation:

Conversion

1 picometer (pm) is equivalent to 1 × 10^{-12} meter

1 micrometer is equivalent to 1 × 10^{-6} meter

To find the number of layers, we divide the overal leaf thickness by the thickness of one atom hence dividing tex]0.125 × 10^{-6}[/tex] meter by 174 × 10^{-12} meter we get that the number of sheets will be as follows

\frac {0.125× 10^{-6}}{174\times 10^{-12}}=718.3908045\approx 719

Therefore, they are approximately 719 sheets

7 0
3 years ago
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