An unknown metal of mass 512 g, at a temperature of 15 °c, is dropped into 325 g of water held in a 100-g aluminum container at a temperature of 98 °c. if the system reaches thermal equilibrium at 78 °c determine the specific heat of the unknown metal. note: t(k) = t(c) +273. the specific heat of aluminum 900 j/kg/k. the specific heat of water = 4190 j/kg/k (a) 485 j/kg/k (b) 900 j/kg/k (c) 1800 j/kg/k (d) 655 j/kg/k

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

In which of the following would the particles move most rapidly? a. ice at -20 °c b. water at 20 °c c. steam at 110 °c d. boiling water e. ice at 0 °c

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.