Class Management | Help Work and Energy Part 3 Begin Date: 4/1/2022 12:01:00 AM -- Due Date: 4/22/2022 11:59:00 PM End Date: 5/ 15/2022 11:59:00 PM (10%) Problem 6: The pulsar in the center of The Crab Nebula (shown in the gure) is the remnant of a supernova that occurred in AD. 1054. The current power output of this pulsar is PCmb =25 x 1028 w. Uthccxpcrltaxmn D A Calculate the factor by which the power output of this astronomical object has declined since its explosion, given that all supernova have an initial power output of about PSN = 5 x 1037 W. Grade Summary P Crab / P SN = | Deductions 0% Potential 100% Submissions Attempts remaining: (% per attempt) detailed view tanhO Degrees O Radians Submit Hint I give up! Hints: 0 % deduction per hint. Hints remaining: 1 Feedback: 0 % deduction per feedback. Glass Management | Help Work and Energy Part 3 Begin Date: 4/1/2022 12:01:00 AM -- Due DatE: 4/22/2022 11:59:00 PM End Date: 5/15/2022 11:59:00 PM (10%) Problem 7: It takes a student I = 8.8 s to push a block m = 43 kg at a constant velocity over a distance of d = 93 m. The coefcient of friction between the block and the around is u = 0.39. D A 33% Part (a) Write an expression using the variables provided for the force applied by the student F;- Grade Summary | Deductions 0% Potential 100 % Submissions Attempts remaining: 5 (0% per attempt) _ dEiIed view I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback. A 33 % Part (b) Write an expression for the energy required for the work done by the student in moving the block along this path in terms of the variables provided. E A 33% Part (c) How much power, in Watts, was applied to the block by the student