This preview has intentionally blurred parts. Sign up to view the full document

View Full Document

Unformatted Document Excerpt

IUPhysicsP201F2009 Assignment 5b Due at 11:00pm on Sunday, October 5, 2008 Assignment Display Mode: View Printable Answers View Grading Details Problem 6.57 Description: Early test flights for the space shuttle used a "glider" (mass of 980 kg including pilot) that was launched horizontally at 500 (km)/h from a height of 3500 m. The glider eventually landed at a speed of 200 (km)/h. (a) What would its landing speed... Early test flights for the space shuttle used a "glider" (mass of 980 including pilot) that was launched horizontally at 500 from a height of 3500 . The glider eventually landed at a speed of 200 . Part A What would its landing speed have been in the absence of air resistance? Express your answer using two significant figures. ANSWER: = Part B What was the average force of air resistance exerted on it if it came in at a constant glide of 10 to the Earth? ANSWER: = Problem 6.88 Description: Some electric-power companies use water to store energy. Water is pumped by reversible turbine pumps from a low to a high reservoir. (a) To store the energy produced in t hour by a P P * 10^6 (W) electric-power plant, how many cubic meters of... Some electric-power companies use water to store energy. Water is pumped by reversible turbine pumps from a low to a high reservoir. Part A To store the energy produced in 3.0 hour by a 150 electric-power plant, how many cubic meters of water will have to be pumped from the lower to the upper reservoir? Assume the upper reservoir is Page 1 of 20 MasteringPhysics: Assignment Print View 9/17/2008 http://session.masteringphysics.com/myct/assignmentPrint?assignmentID=1144577 490 above the lower and we can neglect the small change in depths within each. Water has a mass of 1000 for every . Express your answer using two significant figures. ANSWER: = Problem 6.76 Description: An airplane pilot fell h after jumping from an aircraft without his parachute opening. He landed in a snowbank, creating a crater d deep, but survived with only minor injuries. Assuming the pilot's mass was m and his terminal velocity was v_terminal. ... An airplane pilot fell 390 after jumping from an aircraft without his parachute opening. He landed in a snowbank, creating a crater 1.5 deep, but survived with only minor injuries. Assuming the pilot's mass was 79 and his terminal velocity was 39 . Part A Estimate the work done by the snow in bringing him to rest. Express your answer using two significant figures. ANSWER: = Part B Estimate the magnitude of the average force exerted on him by the snow to stop him. Express your answer using two significant figures. ANSWER: = Part C Estimate the work done on him by air resistance as he fell. Express your answer using two significant figures. ... View Full Document

End of Preview