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sesenic [268]
3 years ago
6

Fault block mountains form when large blocks of crust are and tilted along normal faults

Physics
1 answer:
Katarina [22]3 years ago
6 0
Fault block mountains form when large blocks of crust are uplifted and tilted along normal faults. The uplifted blocks are called block mountains. They are formed by the movement of large crustal blocks<span> when forces in the Earth's crust pull it apart. Some parts of the Earth are pushed upward and others collapse down.</span>
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An immersion heater of power J= 500 W is used to heat water in a bowl. After 2 minutes, the temperature increases from T1= 85°C
Setler79 [48]

Answer: 0.051kg

Explanation:

Using the law of calorimetry which states that the amount of heat lost by a hot substance is equal to the amount of heat gained by the cold substance.

Applying the law to this question,

Amount of heat lost by the heater = heat gained by the water

Heat lost by Immersion heater Q1 = Power×time

Given power = 500W time = 2minutes = 120seconds

Heat loss by immersion heater = 500×120 = 60,000Joules

Heat gained by water = mc∆t where;

m is the mass of the water in the bowl = ?

c is the specific heat capacity = 4.2x10³JK-1 Kg-1

∆t = change in temperature = 90°C -85°C = 5°C

= 273+5 = 278K

Substituting in the formula we have;

Q2= 4.2×10³×278×m = 1,167,600m

According to the law if calorimetry,

Q2=Q1

1,167,600m = 60000

m = 60000/1,167,600

m = 0.051kg

Therefore the mass of water in the bowl is 0.051kg

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Answer:

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Answer:

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