Answer: 5289 joules
Explanation:
The quantity of Heat Energy (Q) required to heat a substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)
Thus, Q = MCΦ
Since, Mass of ice = 20 g
C is not provided (Recall that the specific heat capacity of ice is 2.010J/g°C)
Φ = (Final temperature - Initial temperature)
(120°C - (-25°C) =
120°C + 25°C = 145°C
Thus, Q = 20g x 2.010J/g°C x 145°C
Q= 5829J
Thus, 5829Joules of heat energy is required to heat ice
Answer:
at the 90 degree angle... i think
Explanation:
I think only if they were too overpowered maybe, but the modern world doesn't except this kind of dictatorship. Most armies are much more powerful than in the past.
The convection currents would come from the exterior core and they would travel through the mantle and eventually through the core
