View Policies Current Attempt in Progress A 4.0 kg lunchbox is sent sliding over a frictionless surface, in the positive direction of an x axis along the surface. Beginning at time t=0, a steady wind pushes on the lunchbox in the negative direction of the x axis. The figure shows the position x of the lunchbox as al function of time t as the wind pushes on the lunchbox. From the graph, estimate the kinetic energy of the lunchbox at (a) t = 1.0 s and (b) t= 5.0 s. (c) How much work does the force from the wind do on the lunchbox from t = 1.0 s to t= 5.0 s? (a) Number (b) Number (c) Number E 3 2 Units Units Units 1 2 4 5 6 7 8

View Policies Current Attempt in Progress A 4.0 kg lunchbox is sent sliding over a frictionless surface, in the positive direction of an x axis along the surface. Beginning at time t=0, a steady wind pushes on the lunchbox in the negative direction of the x axis. The figure shows the position x of the lunchbox as al function of time t as the wind pushes on the lunchbox. From the graph, estimate the kinetic energy of the lunchbox at (a) t = 1.0 s and (b) t= 5.0 s. (c) How much work does the force from the wind do on the lunchbox from t = 1.0 s to t= 5.0 s? (a) Number (b) Number (c) Number E 3 2 Units Units Units 1 2 4 5 6 7 8

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College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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PRINTER VERSION 1 BACK NEXT A 3.0 kg lunchbox is sent sliding over a frictionless surface, in the positive direction of an x axis along the surface. Beginning at time t = 0, a steady wind pushes on the lunchbox in the negative direction of the x axis. The figure shows the position x of the lunchbox as a function of time t as the wind pushes on the lunchbox. From the graph, estimate the kinetic energy of the lunchbox at (a) t = 1.0 s and (b) t = 5.0 s. (c) How much work does the force from the wind do on the lunchbox from t = 1.0 s to t = 5.0 s? 2 3 4. 7 8. t (s) (a) Number Units (b) Number Units (c) Number Units Click if voL would lika to Show Work for this question- 9:10 PM ENG o search 4/4/2021 SUS pause break hon end Pgup Inpgdn prf sc insert delete 13 17 %23 backs 3 4 5. 81 (u) x
Part A The cable of a crane is lifting a 950 kg girder. The girder increases its speed from 0.25 m/s to 0.75 m/s in a distance of 2.3 m. What is the girder's change in kinetic energy? Express your answer with the appropriate units. AK = Value Units %3D Submit Request Answer
A 2.11 kg cart moving along a horizontal track in the positive x direction has a changing force exerted on it. The force exerted on the cart is plotted in the graph shown. In the plot, Fmax has a value of 5.95 Newtons. Note that the friction between the cart and track is negligible. a.-Calculate the work done on the cart when it has reached a displacement of 21.3 cm along the track. b.- If the cart starts from rest, calculate how fast the cart is going when it has reached a displacement of 21.3 cm along the track.
A piano mover is pushing a 240-kg piano a distance d=5.0 m with a force parallel to the floor of magnitude FP=480N. The coefficient of kinetic friction between the floor and the piano is μ?=0.180. a)Find the work done by the piano mover on the piano. b)Find the work done by the friction force. c)Find the work done by the gravitational and normal forces. d)Find the speed of the piano after it moved 5.0 m assuming it started from rest.
A 2.46 kg block moves along a frictionless surface with a speed of 7.83 m/s when it encounters a rough shallow hill, whose sides have a length of l=5.21 m. The hill is low enough so that the block can make it over the hill. Because the surface of the hill is rough (shown in orange in the figure), the block experiences a frictional force of 2.23 N while on the hill. a) What is the speed of the block after it traverses the hill?
A student lifts a 2.1‑kg physics book to a height of 64 cm and then puts it down to its original position. Assume that the speed of the book remains constant during the entire process. The work done by the student while lifting the book up, W1 = Units Select an answer W J kg m/s^2 m/s m no units required . The work done by the gravity force while lifting the book up, W2 = Units Select an answer W kg J m/s^2 m m/s no units required . The work done by the student while putting the book down, W3 = Units Select an answer m/s^2 J m/s m W kg no units required . The work done by the gravity force while putting the book down, W4 = Units Select an answer W J m/s^2 m/s m kg no units required . If the book is lifted up in 1.25 seconds, how much power was developed by the student? P = Units Select an answer W m m/s^2 m/s J kg no units required .
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Vx vx (m/s) 2 A 0 A -2 200evin Bə BCDE F t The diagram is the velocity-versus-time graph for a 3.10 kg object moving along the x-axis. Determine the work (in J)done on the object during the time interval AB. Submit Answer Tries 0/10 Determine the work (in J)done on the object during the time interval BC. Submit Answer Tries 0/10 Determine the work (in J)done on the object during the time interval CD. Submit Answer Tries 0/10 Determine the work (in J)done on the object during the time interval DE. Submit Answer Tries 0/10 Determine the work (in J)done on the object during the time interval EF. Submit Answer Tries 0/10 T
A 20.0 kg box slides up a 12.0 m long incline at an angle of 30.0 degrees with the horizontal. A force of 150 N is applied to the box to pull it up the incline. The applied force makes an angle of 10.0 degrees to the incline and above the incline. If the incline has a coefficient of kinetic friction of 0.100, then the increase in the kinetic energy of the box is Multiple Choice 424 J. 297 J. 250 J. 395 J. 344 J.
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Current Attempt in Progress In the figure here, a block of ice slides down a frictionless ramp at angle 0-59.0° while an ice worker pulls on the block (via a rope) with a force that has a magnitude of 53.0 N and is directed up the ramp. As the block slides down through distance d = 0.600 m along the ramp, its kinetic energy increases by 80.0 J. How much greater would its kinetic energy have been if the rope had not been attached to the block? Number Unit
Question 19 of 22 View Policies W = Current Attempt in Progress A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates. A 66.5- kg water-skier has an initial speed of 5.9 m/s. Later, the speed increases to 10.5 m/s. Determine the work done by the net external force acting on the skier. eTextbook and Media GO Tutorial Save for Later p Attempts: 0 of 5 used || Submit Answer