{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

PHYS153assign2a

# PHYS153assign2a - UB hys C ics 15 20 3 10 Physics 153...

This preview shows pages 1–2. Sign up to view the full content.

Physics 153 Assignment 2a Due the day of your Tutorial in the week of October 4-8, 2010 1. (a) Two 50g ice cubes are dropped into 200g of water in a glass. If the water was initially at a temperature of 25 C , and if the ice came directly from the freezer at - 15 C , what will the temperature of the drink be when the ice and water reach the same temperature? (b) How much ice is left? (c) Suppose that only one ice cube had been used in part (a), what would be the final temperature of the drink? Neglect the heat capacity of the glass. 2. A copper-bottomed saucepan containing 0.8L of boiling water boils dry in 10min. Assuming that all heat flows through the flat copper bottom, which has a diameter of 15cm and a thickness of 3.0mm, calculate the temperature of the outside of the copper bottom while some water is still in the pan. 3. A small pond has a layer of ice 1cm thick floating on its surface. (a) If the air temperature is - 10 C , find the rate in cm per hour at which ice is added to the layer. The thermal conductivity of ice is 0 . 592 W/mK . (b) How long does it take for a 20cm layer to build up?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern