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I need help with questions 20 and 21 can someone please solve it?
ing & Assess C PART A) An 18.7 Kg Block is Drag X+ https//quest.cns.utexas.edu/student/instances/show?instance courseuserassignment 38322957 Answer in units of w 1. multiplies distance. 2. multiplies effort force. 3. decreases distance. 4. makes the resistance force smaller. 020 (part 1 of 2) 10.0 points A 19.2 kg block is dragged over a rough, hor- izontal surface by a constant force of 200 N acting at an angle of 28.9 above the horizon- tal. The block is displaced 66.8 m, and the coefficient of kinetic friction is 0.237 014 10.0 points Lee pushes horizontally with a force of 75 N on a 36 kg mass for 10 m across a floor. 19.2 kg Calculate the amount of work Lee did. Answer in units of J 0.237 Find the work done by the 200 N force. The 015 10.0 points An automobile engine delivers 56.1 hp. Answer in units of J How much time will it take for the engine the engine Answer in iavity is 9.8 m/s2 to do 8.46 x 10% J of work? One horsepower is equal to 746 watts 021 (part 2 of 2) 10.0 points dinaní (zd2769)-#8 Machines and Energy-roden-(roden 18) Find the magnitude of the work done by the A student weighing 575 N climbs at constant speed to the top of an 14 m vertical rope in 19 s. force of friction. Answer in units of J. What is the average power expended by the 022 10.0 points student to overcome gravity? Answer in units of W A screwdriver being used to pry open a can of paint is an example of which type of simple machine? 027 10.0 points An inclined plane reduces the effort force by 1. screw 1. increasing the work.
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