On October 21, 2001, Ian Ashpole of the United Kingdom achieved a record altitude of 3.35 km (11 000 ft) powered by 600 toy balloons filled with helium. Each filled balloon had a radius of about 0.50 m and an estimated mass of 0.30 kg. (a) Estimate the total buoyant force on the 600 balloons. (b) Estimate the net upward force on all 600 balloons. (c) Ashpole parachuted to the Earth after the balloons began to burst at the high altitude and the buoyant force decreased. Why did the balloons burst?

Short Assignment By 4/04/2016 https://session.masteringphysics.com/myct/assignmentPrintViewdispl... Short Assignment By 4/04/2016 Due: 11:00am on Monday, April 4, 2016 To understand how points are awarded, read theg Policy for this assignment. Problem 28.48 Light with a wavelength of 623 passes through a slit 8.31 wide and falls on a screen 1.89away. Part A Find the distance on the screen from the central bright fringe to the third dark fringe above it. ANSWER: = 43.6 Correct Problem 28.66 A diffraction grating with 365 is 1.00 in front of a screen. Part A What is the wavelen