Please help me with the following questions.

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Part A A spring of negligible mass has force constant k = 1500 N/m. How far must the spring be compressed for 3.40 J of potential energy to be stored in it? Express your answer in meters to three significant figures. VO AEQ T= m Submit Request Answer Part B You place the spring vertically with one end on the floor. You then drop a m = 1.20 kg book onto it from a height of h = 0.600 m above the top of the spring. Find the maximum distance the spring will be compressed. Express your answer in meters to three significant figures. VO AED $8 ? d = m Submit Request AnswerPart A A 62.0 kg skier is moving at 6.90 m/s on a frictionless, horizontal, snow-covered plateau when she encounters a rough patch 4.20 m long. The coefficient of kinetic friction between this patch and her How fast is the skier moving when she gets to the bottom of the hill? skis is 0.300. After crossing the rough patch and returning to friction- Express your answer with the appropriate units. free snow, she skis down an icy, frictionless hill 2.50 m high. ? U2 = Value Units Submit Request Answer Part B How much internal energy was generated in crossing the rough patch? Express your answer with the appropriate units. HA ? E = Value Units Submit Request AnswerPart A A small block with mass 0.0400 kg is moving in the xy-plane. The net force on the block is described by the potential-energy function U(x, y) = (5.55 J/m?)x2 - (3.90 J/m3 )y3. What is the magnitude of the acceleration of the block when it is at the point x = 0.29 m, y = 0.56 m? Express your answer with the appropriate units. A help a = Value Units Submit Request Answer Part B What is the direction of the acceleration of the block when it is at the point x = 0.29 m, y = 0.56 m? Express your answer in degrees. V AEd ? 0 = counterclockwise from the +x-axis Submit Request AnswerPart A A 1580 kg rocket is to be launched with an initial upward speed of 50.0 m/s. In order to assist its engines, the engineers will start it from rest on a ramp that rises 53" above the horizontal (Figure 1). How far from the base of the ramp should the rocket start, as measured along the surface of the ramp? At the bottom, the ramp turns upward and launches the rocket Express your answer in meters to three significant figures. vertically. The engines provide a constant forward thrust of 2000 N, and friction with the ramp surface is a constant 500 N. DA AEQ d= m Submit Request Answer Provide Feedback Figure 1 of 1 Rocket starts here. Rocket is launched 530 upward.V Part A A sled with rider having a combined mass of 110 kg travels over the perfectly smooth icy hill shown in the accompanying figure.(Figure 1 How far does the sled land from the foot of the cliff? Express your answer in meters. VO AEd ? d = m Submit Request Answer Provide Feedback Figure co. To = 0.200 m. Express your answer in terms of x, x0 and a. OAL U(x) = Submit Request Answer Part B An object with mass m = 0.500 kg is released from rest at x = 0 and moves in the +x-direction. If F is the only force acting on the object, what is the object's speed when it reaches a = 0.400 m? Express your answer with the appropriate units. ? Value Units Submit Request AnswerPart A A 15.0 kg stone slides down a snow-covered hill (Figure 1), leaving point A at a speed of 10.0 m/s. There is no friction on the hill between points A and B, but there is friction on the level ground at What is the speed of the stone when it reaches point B? the bottom of the hill, between B and the wall. After entering the Express your answer in meters per second to three significant figures rough horizontal region, the stone travels 100 m and then runs into a very long, light spring with force constant 2.40 N/m. The coefficients of kinetic and static friction between the stone and the VO AED ? horizontal ground are 0.20 and 0.80, respectively. U2 = m/s Submit Request Answer Part B Figure Part A In one day, a 90 kg mountain climber ascends from the 1540 m level on a vertical cliff to the top at 2400 m . The next day, she descends from the top to the base of the cliff, which is at an What is her change in gravitational potential energy on the first day? elevation of 1180 m . Express your answer in joules. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Height of a baseball from energy conservation. AEd ? AU = Submit Request Answer Part B What is her change in gravitational potential energy on the second day? Express your answer in joules. AEd ? AU = Submit Request