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how much heat would be required to melt 100g of ice? (1g requires 80 cal of heat) show your

1 g requires 80 cal of heat, then 100 g requires 80*100=8000 cal

1 cal = 4.1868 J

Then Q = 1910.767 J

for you:

The heat energy is defined from the equation:

Δ

where

i was thinking more like reflects green light, just not sure

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west