Suppose 100 g of water at 50°C is placed in contact with 200 g of iron at 30°C. The final temperature of the mixture is 46.5°C.

a. What is the energy gained by the iron if the specific heat capacity is .45 J/gºC?

b. What is the energy lost by the water if the specific heat capacity is 4.18 J/g°C?

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.

8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.

How does changing the frequency affect the energy of the wave?