ReviewProblems

# ReviewProblems - Wet Penguins...

This preview shows pages 1–3. Sign up to view the full content.

Wet Penguins A rectangular block of ice 13 m on each side and 1.2 m thick Foats in sea water. The density of the sea water is 1025 kg/m 3 . The density of ice is 917 kg/m 3 . a) How high does the top of the ice block Foat above the water level? 0.1265 m Help Reset Enter * 0.1265 OK b) How many penguins of mass 21 kg each can stand on the ice block before they get their feet wet? 1043 Help Reset Enter * 1043 OK All Help Reset All Tycho Instructions Physical Constants (pi, g, k, c, G, etc.) Astronomical Constants (mass, radius of the earth, sun, etc.) Gradebook Assignment Menu List of Assignments Course Homepage Log In Log Out Wet Penguins https://tycho-s.physics.wisc.edu/cgi/courses/shell/phys103/spring09/t. .. 1 of 1 4/19/10 2:26 PM

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

View Full Document
River Dam generates electricity with water taken from a depth of 135 m and with an average Fow rate of 570 m 3 /s. a) Calculate the power in this Fow. Note that the velocity and height of the water are not changed appreciably by the generators, and the pressure at the exit point is at atmospheric level. Take the density of water to be 1000 kg/m 3 . 754.1 MW Help Reset Enter * 754.1 OK b) What is the speed of the water at the exit point? 51.43 m/s Help Reset Enter * 51.43 OK c) What is the radius of the exit hole in the dam? 1.878 m Help Reset Enter * 1.878 OK All Help Reset All Tycho Instructions Physical Constants (pi, g, k, c, G, etc.) Astronomical Constants (mass, radius of the earth, sun, etc.) Gradebook Assignment Menu List of Assignments Course Homepage Log In Log Out River Dam https://tycho-s.physics.wisc.edu/cgi/courses/shell/phys103/spring09/t. .. 1 of 1
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 8

ReviewProblems - Wet Penguins...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online