This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: homework 01 ALIBHAI, ZAHID 1 Latest unpenalized work: Jan 26 2007 Friday 04:00 (after this date you can not make a perfect score). Work cutoff: Jan 26 2007, 4:00 am. Question 1 part 1 of 1 10 points A piece of pipe has an outer radius, an inner radius, and length as shown in the figure below. 3 7 c m 4 . 6 cm 2 . 7 cm b The density is 7 . 6 g / cm 3 . What is the mass of this pipe? Answer in units of kg. Question 2 part 1 of 1 10 points One cubic meter (1.0 m 3 ) of aluminum has a mass of 2700 kg, and a cubic meter of iron has a mass of 7860 kg. Find the radius of a solid aluminum sphere that has the same mass as a solid iron sphere of radius 2 . 68 cm. Answer in units of cm. Question 3 part 1 of 1 10 points A cylinder, 16 cm long and 8 cm in radius, is made of two different metals bonded end toend to make a single bar. The densities are 4 . 6 g / cm 3 and 6 . 1 g / cm 3 . 1 6 c m 8 cm What length of the lighter metal is needed if the total mass is 17741 g? Answer in units of cm. Question 4 part 1 of 1 10 points Convert 46 . 2 to radians. Answer in units of rad. Question 5 part 1 of 1 10 points Use the fact that the speed of light in a vacuum is about 3 . 00 10 8 m/s to determine how many kilometers a pulse from a laser beam travels in exactly five hours. Answer in units of km....
View Full
Document
 Spring '08
 Turner
 Work

Click to edit the document details