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3 years ago

Name the atomic models shown here in the correct order: Please please please heeelp

Physics

1 answer:

slava [35]3 years ago

6 0

Answer:

ITS OPTION B...

AS THOMAS HAS GIVEN THE DIAGRAM IN WHICH THE NUCLEUS LOOKS LIKE THEY EMBEDDED IN IT...LIKE SEEDS IN WATERMELON /CHRISTMAS PUDDING

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When a warm air mass collides with a cold air mass, the warm air mass rises above the cold air mass leading too:

nikdorinn [45]

Answer: It leads to a front. A front is.., I don't know how to explain it, so I'll add a picture. Fronts are made out of clouds and usually bring rain. So the answer is C: The formation of clouds and rain.

Explanation:

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3 years ago

Mixture are the same throughout

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4 years ago

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8. A boy pulls a 20.0-kg box with a 140-N force at 30° above a horizontal surface. If the coefficient of kinetic friction betwee

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3 years ago

100 g of Ice at -10°C is added into a

Andrei [34K]

Answer:

The mass of the juice responsible for melting the ice is 949.043 grams.

Explanation:

By the First Law of Thermodynamics, we understand that juice releases heat to the ice, which turns into water under the assumption that interactions between the ice-juice system and surroundings are negligible and energy processes are done in steady-state. Since juice is done with water, its specific heat will be taken as of the water. The process is described by the following formula:

$m_{i} \cdot [c_{i}\cdot (T_{1}-T_{2}) - L_{f} + c_{w}\cdot (T_{2}-T_{3})] + m_{w} \cdot c_{w}\cdot (T_{4}-T_{3}) = 0$ (1)

Where:

$m_{i}$ - Mass of ice, in grams.

$m_{w}$ - Mass of the juice, in grams.

$c_{i}$ - Specific heat of ice, in joules per gram-degree Celsius.

$c_{w}$ - Specific heat of water, in joules per gram-degree Celsius.

$L_{f}$ - Latent heat of fusion, in joules per gram.

$T_{1}$ - Initial temperature of ice, in degrees Celsius.

$T_{2}$ - Melting point of water, in degrees Celsius.

$T_{3}$ - Final temperature of the ice-juice system, in degrees Celsius.

$T_{4}$ - Initial temperature of the juice, in degrees Celsius.

If we know that $m_{i} = 100\,g$ , $c_{i} = 2.090\,\frac{J}{g\cdot ^{\circ}C}$ , $c_{w} = 4.18\,\frac{J}{g\cdot ^{\circ}C}$ , $L_{f} = 334\,\frac{J}{g}$ , $T_{1} = -10\,^{\circ}C$ , $T_{2} = 0\,^{\circ}C$ , $T_{3} = 10\,^{\circ}C$ and $T_{4} = 20\,^{\circ}C$ , then the mass of the juice is:

$m_{w} = \frac{m_{i}\cdot [c_{i}\cdot (T_{1}-T_{2}) - L_{f} + c_{w}\cdot (T_{2}-T_{3})]}{c_{w} \cdot (T_{3}-T_{4})}$

$m_{w} = \frac{(100\,g)\cdot \left[\left(2.090\,\frac{J}{g\cdot ^{\circ}C} \right)\cdot (-10\,^{\circ}C) - 334\,\frac{J}{g} +\left(4.18\,\frac{J}{g\cdot ^{\circ}C} \right)\cdot (-10\,^{\circ}C) \right]}{\left(4.180\,\frac{J}{g\cdot ^{\circ}C} \right)\cdot (-10\,^{\circ}C)}$

$m_{w} = 949.043\,g$

The mass of the juice responsible for melting the ice is 949.043 grams.

5 0

3 years ago

The electrical generators can provide 1.5 × 109 W of power for a maximum of 5 hours. Calculate the maximum energy that can be tr

hoa [83]

The maximum energy that can be transferred by the electrical generator is 2.7×10¹³ Joules.

We can use the equation of electric power and electric energy.

Electric Power: This can be defined as the ratio of the electric energy to the time of electrical equipment.

⇒ Formula

P = E/t............... Equation 1

⇒Where:

P = Maximum electric power
E = Maximum electric Energy
t = time.

make E the subject of the equation

E = Pt................. Equation 2

From the question,

⇒ Given:

P = 1.5×10⁹ W
t = 5 hours = (5×60×60) seconds = 18000 seconds = 1.8×10⁴ s

⇒ Substitute these values into equation 2

E = (1.5×10⁹)(1.8×10⁴)
E = 2.7×10¹³ Joules.

Hence, the maximum energy that can be transferred by the electrical generator is 2.7×10¹³ Joules.

Learn more about Electric energy here: brainly.com/question/21222010

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3 years ago

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