100g of water (specific heat=4.184j/g*c) and 100g of a metal sample (specific heat= 0.397j/g*c) are heated from 25c to 75c. which substance required more thermal energy to reach 75c? (explain your reasoning).

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.