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grin007 [14]
2 years ago
14

75 POINTS!!!!! Please help me! I need the correct answer! This is my second time posting this cause no one answered.

Physics
2 answers:
Doss [256]2 years ago
8 0
Try this website, it should answer your question and give you a source
https://www.realclearscience.com/blog/2013/05/what-is-an-atom's-shape.html

son4ous [18]2 years ago
6 0
According to the article "Nuclear shapes" by Renee Lucas the nucleus's shape is mainly modified by vibrational and rotational features happening within the cell. According to the article if i read correctly "near closed shells spherical shapes prevail, while between closed shells the large number of valence nucleons in orbit with large particle angular momentum leads to nuclei with large deformations leading them to not only maintain its shape but also alloying it to work.
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Why is science always changing
Anastaziya [24]

Answer:

Science is changing because little by little scientists descover new things.

Explanation:

Discovery

Hope this helps:)

8 0
3 years ago
Read 2 more answers
Early in Earth’s history, differentiation resulted in ___________.
ICE Princess25 [194]

Answer:

ITS D

Explanation:

Trust me

4 0
2 years ago
The initial temperature of 150 g of ice is ????20°C. The spe- cific heat capacity of ice is 0.5 cal/g·C° and water’s is 1 cal/g·
soldier1979 [14.2K]

1. 13,500 cal

First of all, we need to find the amount of heat needed to raise the temperature of the ice from -20°C to 0°C. This is given by

Q_1 = m C_i \Delta T

where

m = 150 g is the mass of the ice

C_i = 0.5 cal/g·C° is the specific heat capacity of the ice

\Delta T=0 C-(-20 C)=20^{\circ}C is the change in temperature of the ice

Substituting,

Q_1 = (150 g)(0.5 cal/gC)(20 C)=1500 cal

Now we have to find the amount of heat needed to melt the ice, which is

Q_2 = m \lambda_f

where

m = 150 g is the mass of the ice

\lambda_f = 80 cal/g is the latent heat of fusion

Substituting,

Q_2 = (150 g)(80 cal/g)=12,000 cal

So the total heat required is

Q_3 = 1500 cal + 12,000 cal = 13,500 cal

2. 3750 cal

The additional amount of heat required to heat the water to 25°C is

Q_4 = m C_w \Delta T

where

m = 150 g is the mass of water

C_w = 1 cal/g·C is the speficic heat capacity of water

\Delta T=25 C-0 C=25^{\circ}C is the change in temperature

Substituting,

Q_4 = (150 g)(1 cal/gC)(25 C)=3,750 cal

3. 9200 cal

First of all, we need to find the amount of heat needed to raise the temperature of the ice from -20°C to 0°C. As at point 1., this is given by

Q_1 = m C_i \Delta T

where

m = 80 g is the mass of the ice

C_i = 0.5 cal/g·C° is the specific heat capacity of the ice

\Delta T=0 C-(-20 C)=20^{\circ}C is the change in temperature of the ice

Substituting,

Q_1 = (80 g)(0.5 cal/gC)(20 C)=800 cal

Now we have to find the amount of heat needed to melt the ice:

Q_2 = m \lambda_f

where

m = 80 g is the mass of the ice

\lambda_f = 80 cal/g is the latent heat of fusion

Substituting,

Q_2 = (80 g)(80 cal/g)=6,400 cal

Finally, the amount of heat required to heat the water to 25°C is

Q_3 = m C_w \Delta T

where

m = 80 g is the mass of water

C_w = 1 cal/g·C is the speficic heat capacity of water

\Delta T=25 C-0 C=25^{\circ}C is the change in temperature

Substituting,

Q_3 = (80 g)(1 cal/gC)(25 C)=2,000 cal

So the total heat required is

Q=Q_1+Q_2+Q_3=800 cal+6,400 cal+2,000 cal=9,200 cal

4. No

Explanation:

The total heat required for this process consists of 3 different amounts of heat:

1- The heat required to bring the ice at melting temperature

2- The heat required to melt the ice, while its temperature stays constant

3- The heat required to raise the temperature of the water

However, computing how much heat is required to melt the ice and adding the amount of heat required to raise the temperature of 80 g of water by 45°C is not equivalent: in fact, the calculation of point 1) requires to use the specific heat capacity of ice, not that of water, therefore the two are not equivalent.

4 0
2 years ago
Which represents one dimensional motion
spayn [35]

Answer: The correct answer is B. C was wrong.

6 0
2 years ago
Which statement best explains the speed of light waves as a travel from a gas to a solid
Natalija [7]

Answer: Light waves slow down as they travel from gas to solid.

Explanation: Light waves move fastest through gases but when going through solids, it moves much slower.

3 0
3 years ago
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