Multiple ! you can answer any one you ! i need fast! calculate the total heat content of 10 kg of ice at -23°c. (hint: a substance at absolute zero, -273o c, has 0 heat content.) 115 kcal 1300 kcal 1400 kcal 1500 kcal how much heat is contained in 100 kg of water at 60.0 °c? (hint: a substance at absolute zero, -273o c, has 0 heat content.) 30 kcal 2.10 x 104 kcal 2.40 x 104 kcal 2.77 x 104 kcal calculate the energy needed to vaporize 10.0 kg of iron (c = 0.110) initially at 2,640°c. 110 16,300

Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.