Freeze wedging<span> is caused by the repeated freeze-thaw. </span>Frost wedging<span> occurs as the result of 9 % expansion of water when it is converted to ice. Cracks filled with water are forced further apart when it freezes. cycle.</span>
C.) <span>The total mass of an object can be assumed to be focused at one point, which is called its center of "Mass"
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Answer:
wendy can travel 147 km in 3 hr if the speed is costant
Answer:
Explanation:
According to first law of thermodynamics:
∆U= q + w
= 10kj+(-70kJ)
-60kJ
, w = + 70 kJ
(work done on the system is positive)
q = -10kJ ( heat is given out, so negative)
∆U = -10 + (+70) = +60 kJ
Thus, the internal energy of the system decreases by 60 kJ.
Answer:
The magnetic field of Earth is created by currents of electricity that flow in the molten center.
Explanation: