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- The starship Enterprise has its tractor beam locked onto some valuable debris and is trying to pull it toward the ship. A Klingon battle cruiser and a Romulan warbird are also trying to recover the item by pulling the debris with their tractor beams as shown in Figure P5.25. a. Given the following magnitudes of the tractor beam forces, find the net force experienced by the debris: FEnt = 7.59 106 N, FRom = 2.53 106 N, and FKling = 8.97 105 N. b. If the debris has a mass of 2549 kg, what is the net acceleration of the debris? FIGURE P5.25arrow_forwardWhy is the following situation impossible? A book sits on an inclined plane on the surface of the Earth. The angle of the plane with the horizontal is 60.0. The coefficient of kinetic friction between the book and the plane of 0.300. At time t = 0, the book is released from rest. The book then slides through a distance of 1.00 m, measured along the plane, in a time interval of 0.483 s.arrow_forwardFor this problem, assume that the earth is a perfect sphere. Also, assume that if your mass is m, then the earth exerts a gravitational force on you of magnitude mg, where g = 9.8 m/s2 at all points of the earth's surface. a) Your mass is m = will the scale read? (Thanks to the Third Law, this is the same as asking for the normal force exerted on you by the scale.) b) Next you go to the Equator and stand on a scale. What does it read? The radius of the earth is 6.4 × 106 m. c) Suppose the earth were rotating so quickly that objects became “weightless" at the equator. How long would the day be? 50 kg. If you are standing on a scale at the North Pole, whatarrow_forward
- A 175-kg object and a 475-kg object are separated by 3.30 m. (a) Find the magnitude of the net gravitational force exerted by these objects on a 61.0-kg object placed midway between them. N (b) At what position (other than an infinitely remote one) can the 61.0-kg object be placed so as to experience a net force of zero from the other two objects? m from the 475 kg mass toward the 175 kg massarrow_forwardQuestion 8: A horizontal external force F is applied to block of mass 3m so that it moves horizontally as shown in Figure 4. The coefficient of friction force between the block of mass 4m and the ground is 3u while the coefficient of friction force between the blocks is u (g is the gravitational acceleration.). Find the acceleration of block of mass 3m relative to the ground. -> µ 3M 4M 3µ Figure 4 Select one: F - 9µMg 3M F - 3µMg 3M 2F – 18µMg 3M F- 18μMg 6M 2F – 21µMg 6Marrow_forwardA comet (see the figure below) approaches the Sun to within 0.570 AU, and its orbital period is 81.6 yr. (AU is the symbol for astronomical unit, where 1 AU = 1.50 x 1011 m is the mean Earth-Sun distance.) How far from the Sun will the comet travel before it starts its return journey? Sun 0.570 AU 2a (Orbit is not drawn to scale.)arrow_forward
- (a) Calculate the magnitude of the gravitational force exerted on a 426-kg satellite that is a distance of 1.61 earth radii from the center of the earth. (b) What is the magnitude of the gravitational force exerted on the earth by the satellite? (c) Determine the magnitude of the satellite's acceleration. (d) What is the magnitude of the earth's acceleration? (a) Number i Units (b) Number i Units (c) Number i Units (d) Number Unitsarrow_forwardIn the figure, a rectangular slab of slate rests on a bedrock surface inclined at angle 0 = 27.8°. The slab has length L = 41.2 m, thickness T = 7.51 m, and width W = 14.1 m, and 1.0 cm³ of it has a mass of 3.2 g. The coefficient of static friction between slab and bedrock is 0.315. (a) Calculate the component of the gravitational force on the slab parallel to the bedrock surface. (b) Calculate the magnitude of the static frictional force on the slab. By comparing (a) and (b), you can see that the slab is in danger of sliding. This is prevented only by chance protrusions of bedrock. (c) To stabilize the slab, bolts are to be driven perpendicular to the bedrock surface (two bolts are shown). If each bolt has a cross-sectional area of 7.06 cm² and will snap under a shearing stress of 3.06 × 108 N/m², what is the minimum number of bolts needed? Assume that the bolts do not affect the normal force. (a) Number i (b) Number (c) Number i Units Units Units <arrow_forwardAn elevator carrying a person of mass m is moving upward and slowing down. How does the magnitude F of the force exerted on the person by the elevator floor compare with the magnitude mg of the gravitational force? a F < mg b F > mg c F = mg d F can be greater than or less than mg, depending on the speed of the elevator.arrow_forward
- In the figure, a rectangular slab of slate rests on a bedrock surface inclined at angle = 25.6°. The slab has length L = 43.4 m, thickness T = 6.23 m, and width W = 13.6 m, and 1.0 cm³ of it has a mass of 3.2 g. The coefficient of static friction between slab and bedrock is 0.351. (a) Calculate the component of the gravitational force on the slab parallel to the bedrock surface. (b) Calculate the magnitude of the static frictional force on the slab. By comparing (a) and (b), you can see that the slab is in danger of sliding. This is prevented only by chance protrusions of bedrock. (c) To stabilize the slab, bolts are to be driven perpendicular to the bedrock surface (two bolts are shown). If each bolt has a cross-sectional area of 6.42 cm² and will snap under a shearing stress of 3.57 × 108 N/m², what is the minimum number of bolts needed? Assume that the bolts do not affect the normal force.arrow_forwardIn the figure, a rectangular slab of slate rests on a bedrock surface inclined at angle 0 = 28.8°. The slab has length L= 43.1m, thickness T = 8.98 m, and width W = 11.5 m, and 1.0 cm³ of it has a mass of 3.2 g. The coefficient of static friction between slab and bedrock is 0.371. (a) Calculate the component of the gravitational force on the slab parallel to the bedrock surface. (b) Calculate the magnitude of the static frictional force on the slab. By comparing (a) and (b), you can see that the slab is in danger of sliding. This is prevented only by chance protrusions of bedrock. (c) To stabilize the slab, bolts are to be driven perpendicular to the bedrock surface (two bolts are shown). If each bolt has a cross-sectional area of 5.06 cm² and will snap under a shearing stress of 3.38 x 108 N/m², what is the minimum number of bolts needed? Assume that the bolts do not affect the normal force. 3D7 (a) Number i Units i Units (b) Number Units No units + (c) Number i 128arrow_forwardIn the Bohr model of the hydrogen atom, an electron (mass m=9.1 x 10^-31 kg) orbits a proton at a distance of 5.3 x 10^-11 m. The proton pulls on the electron with an electric force of 8.2 x 10^-8 N. How many revolutions per second does the electron make? Can you please make the solution detailed as this is a new topic I had to self-teach myself due to the peculiar circumstances, which is difficult for me. Thank you :)arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
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