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Strike441 [17]
3 years ago
9

One of the main forces driving plate tectonics is the dissipation of heat from the mantle, through convection or large scale upw

elling and doming. Where does this heat come from? A) The formation of the earth Eliminate B) Heat from the earth's core C) Gradual heating from the sun D) Ultraviolet rays from the sun and other stars
Chemistry
1 answer:
IRINA_888 [86]3 years ago
8 0

Answer:

A)

Explanation:

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A 35.0 g piece of metal wire is heated, and the temperature changes from 21 degrees Celsius to 52 degrees Celsius. The amount of
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Answer:

1.23 j/g. °C

Explanation:

Given data:

Mass of metal = 35.0 g

Initial temperature = 21 °C

Final temperature = 52°C

Amount of heat absorbed = 320 cal  (320 ×4.184 = 1338.88 j)

Specific heat capacity of metal = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

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c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 52°C -  21 °C

ΔT = 31°C

1338.88 j= 35 g ×c× 31°C

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2 years ago
Find the energy in kJ for an x-ray photon with a frequency of 2.4 × 10^18 1/s.
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Answer:

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Explanation:

Given data;

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Energy = ?

Formula:

E = h × ν

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now we will convert the joule into kilo joule,

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