1. [-/10 Points] DETAILS SERPSE10 7.2.OP.001. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A raindrop of mass 3.08 x 10-5 kg falls vertically at constant speed under the influence of gravity and air resistance. Model the drop as a particle. (a) As it falls 145 m, what is the work done on the raindrop by the gravitational force? (b) What is the work done on the raindrop by air resistance? Need Help? Read it Watch it 2. [-/10 Points] DETAILS SERPSE10 7.2.OP.003. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A worker pushes a m = 3.20 kg box a distance d = 5.40 m along the floor by a constant force of magnitude F = 16.0 N directed at an angle 0 = 26.0 below the horizontal as shown in the figure. Assume the floor is frictionless. (Enter your answers in joules.) (a) Determine the work done on the box by the applied force (the force on the box exerted by the worker). (b) Determine the work done on the box by the normal force exerted by the floor. (c) Determine the work done on the box by the gravitational force. (d) Determine the work done by the net force on the box. Need Help? Read It 3. [-/10 Points] DETAILS SERPSE10 7.2.P.004.MI.SA. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise Spiderman, whose mass is 73.0 kg, is dangling on the free end of a L = 13.1-m-long rope, the other end of which is fixed to a tree limb above. By repeatedly bending at the waist, he is able to get the rope in motion, eventually getting it to swing enough that he can reach a ledge when the rope makes a 61.70 angle with the vertical. How much work was done by the gravitational force on Spiderman in this maneuver? Click here to begin! Need Help? Read It 4. [-/10 Points] DETAILS SERPSE10 7.3.OP.005. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER For A= 51 + 2j - 4k, B = -i + 4j + 5k, and C = 3j - 3k, find C . (A - B). Need Help? Read It Watch It4. [-/10 Points] DETAILS SERPSE10 7.3.OP.005. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER For A= 51 + 23 - 4k, B = -i + 43 + 5k, and C = 3j - 3k, find C . (A - B). Need Help? Read It Watch It 5. [-/10 Points] DETAILS SERPSE10 7.3.P.007. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Find the scalar product of the vectors in the figure below, where 0 = 1230 and F = 31.5 N. 132 17.3 cm Need Help? Read It 6. [-/10 Points] DETAILS SERPSE10 7.3.OP.006.MI.SA. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise A force F = (9 1 - 4 j) N acts on a particle that undergoes a displacement Ar = (51 + ;) m. (a) Find the work done by the force on the particle. (b) What is the angle between F and AP? Click here to begin! Need Help? Read It 7. [-/10 Points] DETAILS SERPSE10 7.4.P.009. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A particle is subject to a force F. that varies with position as shown in the following figure. F. (N) 6 8 10 12 14 16" Jx (m) (a) Find the work done by the force on the particle as it moves from x = 0 to x = 4.00 m. (b) Find the work done by the force on the particle as it moves from x = 5.00 m to x = 7.00 m. (c) Find the work done by the force on the particle as it moves from x = 13.0 m to x = 15.0 m. (d) What is the total work done by the force over the distance x = 0 to x = 15.0 m? Need Help? Read It Watch It