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lapo4ka [179]
3 years ago
8

Calculate the amount of heat transferred when 710 grams of water warms from an initial temperature of 4.0 ºC to a final temperat

ure of 25.0 ºC. The specific heat capacity of liquid water is 4.184 J/g ºC.
Physics
1 answer:
tigry1 [53]3 years ago
3 0

Answer:

Q = 62383.44 Joules

Explanation:

Given that,

Mass of water, m = 710 gm

Initial temperature of water, T_i=4^{\circ} C

Final temperature of water, T_f=25^{\circ} C

The specific heat capacity of liquid water is, c=4.184\ J/g\ ^oC

Heat transferred is given by :

Q=mc(T_f-T_i)

Q=710\times 4.184\times (25-4)

Q = 62383.44 Joules

So, the amount of heat transferred is 62383.44 Joules. Hence, this is the required solution.

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AveGali [126]

Explanation:

Power output of the bulb:

0.021 × 60 W = 1.26 W

Energy produced by the bulb in 1 second:

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E = (1.26 W) (1 s)

E = 1.26 J

Round as needed.

5 0
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What new tool did geologists use to estimate the changing flow rates of lava over the duration of this eruption? Hint: The answe
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Option b, pothographs from drones.

Explanation:

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Podemos ver en el siguiente enlace un ejemplo de fotografía tomada desde un dron al Kilauea.

https://www.usgs.gov/media/images/k-lauea-volcano-drone-over-lava-channel

4 0
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The leaves of a tree lose water to the atmosphere via the process of transpiration. A particular tree loses water at the rate of
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Answer:

The speed of the sap flowing in the vessel is 1.90 mm/s

Explanation:

Given:

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Now, the rate of flow is given as:

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where, A is the area of the cross-section

V is the velocity

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substituting the values in the equation (1), we get

3 × 10 ⁻⁸ m³/s = [2000 × (π × (50 × 10⁻⁶)²)] × V

or

V = 1.909 × 10⁻³ m/s or 1.90 mm/s

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0.358g

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I am pretty sure the answer to your question is B
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