subject
Physics, 25.11.2019 19:31 lauramount

(a) a piece of aluminum (specific heat 0.910kj/kg0c) of mass 161g at 740c is dropped into a styrofoam cup filled with 152ml water at 200c. what are the final temperatures of the water and the aluminum? use c instead of 0c in your answer.

hint 1: because the cup is well-insulated, you can assume that all the heat leaving the aluminum as it cools goes to heating the water.

hint 2: how are the final temperature of the aluminum related to the final temperature of the water?

(use 4.19kj/kgoc for the specific heat of water.)

(b)you baked two cakes: one in a light aluminum pan and one in a heavy pyrex pan.

-the pan that needs to give up the most heat energy to cool down to room temperature.

a-pyrex b-aluminum

-the pan that gives up the heat energy the fastest

a-pyrex b-aluminum

-the pan most likely to burn your fingers if you try to move it too soon.

a-pyrex b-aluminum

-the pan in which the bottom of the cake is most likely to brown (same temperature oven, same time in oven.)

a-pyrex b-aluminum

ansver
Answers: 3

Another question on Physics

question
Physics, 22.06.2019 13:00
What causes the formation of ocean currents?
Answers: 2
question
Physics, 22.06.2019 16:00
The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?
Answers: 2
question
Physics, 23.06.2019 00:30
Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?
Answers: 2
question
Physics, 23.06.2019 01:00
The amount of heat required to change liquid water to vapor at its boiling temperature is 2256 kj/kg. the amount of heat required to change liquid mercury to its vapor state at its boiling temperature is 295 kj/kg. one kg of each substance is currently at its boiling point. how will the amount of thermal energy required to change each substance from a liquid to a gas differ?
Answers: 3
You know the right answer?
(a) a piece of aluminum (specific heat 0.910kj/kg0c) of mass 161g at 740c is dropped into a styrofoa...
Questions
question
Social Studies, 30.01.2020 19:01
Questions on the website: 13722359