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sveta [45]
3 years ago
10

Write a short summary paragraph that could go at the end of the text

Physics
1 answer:
UNO [17]3 years ago
3 0

Answer:

The electro magnesium of the atoms cause the magnetic force to charge thus creating electricity. just kidding

Explanation:

If you read on the second paragraph it states that magnesium charged created electricity.

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Two objects charged with an equal amount of charge interact with each other with a force
pav-90 [236]

Please check attachment

6 0
3 years ago
What mean by expansion effect of heat<br>​
pishuonlain [190]

Answer:

Explanation:

-Cambio de temperatura

Al calentar un cuerpo la temperatura aumenta

Es el efecto más inmediato del calor, el aumento de la temperatura. Al calentar un cuerpo, es habitual, aunque no siempre, que el cuerpo aumente de temperatura. El aumento dependerá de la cantidad de calor que se suministra, del tipo de sustancia y de su cantidad.

-Dilatación

Cuando un objeto se calienta, su volumen aumenta. Este fenómeno se llama dilatación térmica. Por el contrario, cuando un objeto se enfría, su volumen disminuye, debido a la contracción térmica.

Cuando se calienta un cuerpo, además de cambiar de estado o variar su temperatura, también cambia su tamaño, se dilata.

Por ejemplo, los puentes no se construyen de una única pieza, sino que suelen presentar uno o varios cortes longitudinales, las llamadas juntas de dilatación. Si no existieran esas juntas, los cambios de longitud del puente entre el invierno y el verano o entre el día y la noche acabarían por romperlo.

La dilatación de un cuerpo dependerá del aumento de temperatura que experimente, de su tamaño y de la sustancia de que esté hecho. Cuanto más aumente la temperatura más aumentará su tamaño, lo mismo que cuanto mayor sea, mayor se hará.

Todos los cuerpos, ya sean sólidos, líquidos o gaseosos, varían su tamaño cuando intercambian calor con otro cuerpo.

-Cambios de estado:

Si una sustancia modifica el estado de sólido, líquido o gaseoso, se produce un cambio de estado. Un cambio de estado es una modificación en la forma en que se disponen las partículas que constituyen una sustancia.

El estado en que se encuentre un cuerpo depende de la presión a la que está sometido y de su temperatura. Para cambiar su estado se debe modificar alguna de estas variables, o ambas. Al elevar la temperatura de una sustancia sólida, aumenta la agitación de sus partículas.

5 0
3 years ago
Read 2 more answers
People build a dam to create a reservoir that supplies water a nearby city needs. Describe two ways this action will likely affe
PolarNik [594]
Due to damming the water it will not flow as fast and since it wont flow as fast it will cause the water level to rise.
3 0
4 years ago
Read 2 more answers
A canister is filled with 310 g of ice and 100. G of liquid water, both at 0 ∘c . The canister is placed in an oven until all th
olya-2409 [2.1K]

Here in the process we require

1. Heat to melt down all ice

2. Heat to raise the temperature of whole water to 100 degree C

3. Heat to boil off the water

now here for the first part

Heat required to melt the ice

Q_1 = mL

Q_1 = 310*80  = 24800 cal

now heat required to raise the temperature to 100 degree C

Q_2 = ms\Delta T

Q_2 = (310 + 100)*1*(100 - 0)

Q_2 = 41000 cal

Now heat required to boil it off

Q_3 = mL

Q_3 = 410*540 = 221400 cal

now the total heat required will be

Q = Q_1 + Q_2 + Q_3

Q = 24800 + 41000 + 221400

Q = 287200 cal

so it required 287200 calorie heat to boil it all water

6 0
3 years ago
An object in free fall near the surface of the earth accelerates at a rate of 78979.4 mi/hr What is the rate of acceleration for
Nina [5.8K]

Answer:

32.176 ft/s²

9.807 m/s²

Explanation:

Data provided in the question:

Acceleration of the free falling object = 78979.4 mi/hr²

a) In ft/s

Now,

1 mi = 5280 foot

and,

1 hour = 3600 seconds

thus,

78979.4 mi/hr = \frac{\textup{78979.4}\times\textup{5280}}{\textup{1}\times\textup{3600}^2}

or

78979.4 mi/hr = 32.176 ft/s²             ...............(1)

b) In m/s²

Now,

1 foot = 0.3048 m

thus,

we have from 1

32.17 ft/s² =  \frac{\textup{32.17}\times\textup{0.3048}}{\textup{1}\times\textup{1}^2}

or

78979.4 mi/hr = 32.176 ft/s²  = 9.807 m/s²

7 0
3 years ago
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