Substances a-d have the following specific heats (j/(kg*k)): substance a: 900; substance b: 170; substance c: 270; substance d: 4,180. which substance would be the best for transferring heat in a heating or cooling system? a. substance a b. substance b c. substance c d. substance d **not sure! you: )

Aball is thrown straight up into the air with a speed of 21 m/s. if the ball has a mass of 0.1 kg, how high does the ball go? acceleration due to gravity is g = 9.8 m/s^2. a. 22.5 m b. 20.0 m c. 25.0 m d. 17.5 m

Which boundary is associated with the building of the himalaya mountains? convergent transform divergent hot spot

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?