Review I Constan A horizontal spring with spring constant 120 N/m is compressed 20 cm and used to launch a 2.2 kg box across a frictionless, horizontal surface. After the box travels some distance, the surface becomes rough. The coefficient of kinetic friction of the box on the surface is 0.15. Part A Use work and energy to find how far the box slides across the rough surface before stopping. Express your answer to two significant figures and Include the appropriate units.
Q: A 1250 kg car drives up a hill that is 15.2 m high. During the drive, two nonconservative forces do…
A: Given data: -Mass of the car (m)=1250 kgThe work done by fraction (Wf)=−2.91∗105 JThe work done by…
Q: Hint 1 A small block of mass 246 g starts at rest at A, slides to B where its speed is vg = 5.4 m/s,…
A:
Q: Part A What is the change in mechanical energy of the airplane if it climbs to a cruising altitude…
A: Given Mass of the airplane = 1865 kg Velocity of the plane = 94.5 m/s Height of the plane = 2520 m…
Q: A block slides up an inclined plane. Friction is present between the block and the plane. Which of…
A: Answer :) option(a) the total energy of the block earth system decreases because of the frictional…
Q: ▼ Part A How much work must you do to push a 10.0 kg block of steel across a steel table (μ = 0.60)…
A: Mass of block m = 10 kg speed of block V = 1.0m/s time taken t = 3.40s uk = 0.60
Q: What quantities can you find from a graph of Fx vs. x, the x component of the spring force versus…
A: The force exerted by spring to oppose the elongation or compression of spring is known as spring…
Q: A 1400-NN crate rests on the floor. Part A How much work is required to move it at constant…
A: Write the given values of this problem. frictional force(f)=310 NDistance(d)=5 mm or 5×10-3 m
Q: In the high jump, the kinetic energy of an athlete is transformed into gravitational potential…
A:
Q: A 35.0 kg crate is initially moving with a velocity that magnitude 4.50 m/s in a direction 37.0°…
A:
Q: Part A A 20.0-kg crate sits at rest at the bottom of a 11.5 m -long ramp that is inclined at 35 °…
A:
Q: 1. A box is moving along a ramp, with a velocity directed up the ramp and an acceleration down the…
A: Part (a): The free body diagram of body is shown as, Gravity force acting on body in the direction…
Q: A spring has a spring stiffness constant k of 80.0 N/m . Part A How much must this spring be…
A: Given: The spring stiffness constant k = 80.0 N/m Stored potential energy…
Q: A 360 kg piano slides 2.6 m down a 24° incline and is kept from accelerating by a man who is pushing…
A: Draw the free-body diagram of the piano.
Q: An ideal spring of negligible mass is 12.00 cm long when nothing is attached to it. When you hang a…
A: Force, F = mg = kx 3.95 x 9.8 = k x (0.135m- 0.12m) k=2580.67 N/m
Q: A cutting tool under microprocessor control has several forces acting on it. One force is F =…
A:
Q: Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 2.2x10° N, one an…
A: Given: The force exerted by each tugboat is F = 2.2 x 106 N The force exerted at an angle in the…
Q: Tobiem 10.40 A cable with 17.0 N of tension pulls straight up on a 1.50 kg block that is initially…
A:
Q: ▼ Part A with a force of 1.2 mN. W = What is the work done by the muscle fiber as it contracts to a…
A: Given F = 1.2 mN = 1.2 × 10-3 N Muscle fiber contracts from 2 cm to 1.6 cm length∆ L = 2 cm - 1.6…
Q: Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.30x106 N, one at an…
A: The force exerted by each tug is 1.30×106 N. One force is at 19° angle with the west of the north.…
Q: Susan's 13.0 kg baby brother Paul sits on a mat. Susan pulls the mat across the floor using a rope…
A: The force of friction always acts in the direction opposite to the motion of the body.
Q: Part A How much work must you do to push a 10 kg block of steel across a steel table at a steady…
A:
Q: An ideal spring of negligible mass is 11.00 cm long when nothing is attached to it. When you hang a…
A:
Q: A small block with mass 0.0400 kg is moving in the ay-plane. The net force on the block is described…
A: To find the magnitude of the acceleration of the block at the given point, we need to calculate the…
Q: Susan's 13.0 kg baby brother Paul sits on a m Susan pulls the mat across the floor using a ra that…
A:
Q: Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 2.00x10° N, one at an…
A:
Q: Part A A system in which only one particle can move has the potential energy shown in (Figure 1).…
A:
Q: A balloon of mass M lifts a small rock of mass m from its resting position on the ground to an…
A: M= mass of the baloonm= mass of the rockFo=upward force exerted by the baloon on the rockH= altitude…
Q: With what minimum speed must you toss a 200 gg ball straight up to just touch the 14-mm-high roof of…
A: Mass of ball is m=200 g Initial height of ball is hi=1.1 m Maximum height or final height is h=14 m…
Q: You are unloading a refrigerator from a delivery van. The ramp on the van is 5.0 m long, and its top…
A:
Q: Hooke's law describes an ideal spring. Many real springs are better described by the restoring force…
A:
Q: The maximum height a typical human can jump from a crouched start is about 55.0 cmcm . Part A By…
A:
Q: Part C How much work must be done to compress this spring 4.00 cm from its unstretched length?…
A: The work done by the spring can be given as, Here, k and x represent the spring constant and the…
Q: 2 of A 4.2-g locust reaches a speed of 2.8 m/s during its jump. Part A What is its kinetic energy at…
A:
Q: A 1500 kg car has a maximum power output of 140 hp. Part A How steep a hill can it climb at a…
A:
Q: Truck brakes can fail if they get too hot. In some mountainous areas, ramps of loose gravel are…
A: mass ,m = 15000 kgslope, coefficient of friction is Initial speed , u = 38 m/s
Q: A 50-g mass on the end of a spring at its equilibrium position is stretched a distance of 5.00 cm…
A:
Q: A small block of mass 246 g starts at rest at A, slides to B where its speed is vg = 5.4 m/s, then…
A:
Q: A 55.0 kg ice skater is gliding along the ice, heading due north at 4.30 m/s. The ice has a small…
A: Mass of the person is Initial speed is directed towards north direction.The coefficient of kinetic…
Q: A force of 570 N keeps a certain ideal spring stretched a distance of 0.900 m. Part A What is the…
A:
Q: Sam, whose mass is 72 kg, straps on his skis and starts down a 64 m -high, 20° frictionless slope. A…
A: Given: Mass of Sam, m = 72 kg Height, h = 64 m Inclination of the slope, θ = 20⁰ Horizontal force, F…
Q: A 53.0 kg ice skater is gliding along the ice, heading due north at 4.40 m/s. The ice has a small…
A: m=50kg
Q: Part A A ski tow operates on a slope of angle 15.8° of length 260 m. The rope moves at a speed of…
A:
Q: How much work must you do to push a 12.0 kgkg block of steel across a steel table (μkμk = 0.60) at a…
A: Mass of block =12 kg Speed = 1.20 m/s Time = 5.30 s
Q: A crate with mass m = 33.3 kg being pushed up an incline that makes an angle φ = 22.7 degrees with…
A: Free body diagram :
Q: A young woman on a skateboard is pulled by a rope attached to a bicycle. The velocity of the…
A:
Q: Susan's 13.0 kg baby brother Paul sits on a mat. Susan pulls the mat across the floor using a rope…
A:
Q: How much work must you do to push a 13 kg block of steel across a steel table at a steady speed of…
A: Given,mass of the block, m = 13 kgspeed of the block, v = 1.3 mstime, t = 5.4 scoefficient of…
Step by step
Solved in 2 steps
- A 23.3-kg child descends a slide 3.4 m high and reaches the bottom with a speed of 1.9 m/s. Part A How much thermal energy due to friction was generated in this process? Express your answer using two significant figures.Part A A horizontal spring with spring constant 140 N/m is compressed 17 cm and used to launch a 2.1 kg box across a frictionless, horizontal surface. After the box travels some distance, the surface becomes rough. The coefficient of Use work and energy to find how far the box slides across the rough surface before stopping. kinetic friction of the box on the surface is 0.15. Express your answer using two significant figures. ? cm = 1To stretch an ideal spring 8.00 cm from its unstretched length, 17.0 J of work must be done. Part A What is the force constant of this spring? Express your answer with the appropriate units. HA ? k Value Units %3D Submit Request Answer Part B What magnitude force is needed to stretch the spring 8.00 cm from its unstretched length? Express your answer with the appropriate units. HÀ ? F = Value Units Submit Request Answer
- Part A What is the minimum work needed to push a 900-kg car 860 m up along a 9.5° incline? Ignore friction. Express your answer with the appropriate units. WP = µÅ Value Units ?(Figure 1) is the force-versus-position graph for a particle moving along the x-axis. Figure Fx (N) 4 2 0 -2 -4 1 2 3 -x (m) ▼ Part A Determine the work done on the particle during the interval 0-1 m. Express your answer with the appropriate units. Wo-1 = Units You have already submitted this answer. Enter a new answer. No credit lost. Try again. Submit Part B ΠΑ W1-2 = Submit Value Previous Answers Request Answer Determine the work done on the particle during the interval 1-2 m. Express your answer with the appropriate units. μA Value Units ? www Previous Answers Request Answer ? Units input for part BTwo tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.2×106 N, one an angle 16° west of north and the other an angle 16° east of north, as they pull the tanker a distance 0.76 km toward the north. Part A What is the total work they do on the supertanker? Express your answer in joules. VE ΑΣΦ W = ?
- A 20.0-kg child descends a slide 1.80 m high and reaches the bottom with a speed of 1.25 m/s . Part A How much thermal energy due to friction was generated in this process? Express your answer to three significant figures and include the appropriate units.You are on vacation in San Francisco and decide to take a cable car to see the city. A 5800-kg cable car goes 460 m up a hill inclined 13° above the horizontal. The system is the car and Earth. Part A Determine the change in the total energy of the system when the car moves from the bottom to the top. Ignore friction. Express your answer with the appropriate units.A 45 g bug is hovering in the air. A gust of wind exerts a force F = (4.0î - 6.0ĵ) × 10-² N on the bug. Part A How much work is done by the wind as the bug undergoes displacement A7 = (7.02- 7.03) m? Express your answer with the appropriate units. W = Submit Part B V= HÅ Value Submit X Incorrect; Try Again; 9 attempts remaining Provide Feedback Value Units Previous Answers Request Answer What is the bug's speed at the end of this displacement? Assume that the speed is due entirely to the wind. Express your answer with the appropriate units. μA Request Answer P Units input for part A ? Units P ?
- Part A A 1680 kg car skids on a level road with coefficient of kinetic friction 0.64 between the tires of the car and the road. The car skids a distance of 102 m and comes to a complete stop. The work done on the car by the force of kinetic friction is (enter your answer with two significant figures) possibly useful: W = (Fcose)d w = mg 9 = 9.81 m/s? VAZ中 ? J Submit Request Answer Part B The amount of thermal energy generated while the car was skidding is (enter your answer with two significant figures) AL中 ? J Submit Request AnswerA factory worker pushes a 31.2 kg crate a distance of 4.9 m along a level floor at constant velocity by pushing downward at an angle of 28° below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25. Part C How much work is done on the crate by friction during this displacement? Express your answer using two significant figures. W₁ = 416.30 Submit 1 ( Templates Symbols undo rado reset keyboard shortcuts help ΑΣΦΑ / С Part D X Incorrect; Try Again; 3 attempts remaining Wnf= Previous Answers Request Answer How much work is done by the normal force? Submit Templates Symbols undo do reset keyboard shortcuts help ΑΣΦΑ / C Request Answer J Je You are logged in as Gavin Ritcheson A football weighing 5 N is dropped from a height of 7.6 m above the ground. What is the kinetic energy of the ball just as it hits the ground? Answer: Next page C US 0 11 28