A long telephone pole (wood density 0.80 kg/m3 ) is vertically lowered into a slightly larger vertical pipe which is filled with salt water of density 1.04 kg/m3. The pole ends up floating with what percent of the pole above the water?
What will be an ideal response?
23% above (77% submerged)
You might also like to view...
Which of the following is not an advantage of the Hubble Space Telescope over ground-based telescopes?
A) It is closer to the stars. B) Stars do not twinkle when observed from space. C) It can observe infrared and ultraviolet light, as well as visible light. D) It never has to close because of cloudy skies.
A physicist says that a car accelerating along a level road is being propelled by the road. Defend this statement
What will be an ideal response?
What is the source of the energy the Sun radiates to us?
A) chemical reactions B) nuclear fission reactions C) nuclear fusion reactions D) magnetic explosions E) cosmic rays
Angular and Linear Quantities: A wheel of diameter 0.70 m rolls on the floor without slipping. A point at the top of the wheel moves with a speed 2.0 m/s relative to the floor.(a) At what speed is the central axis of the wheel moving relative to the floor?(b) What is the angular speed of the wheel?
What will be an ideal response?