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A 6 kg object sits on a horizontal surface with coefficient of friction = .8. What is the minimum force (not necessarily horizontal) necessary to make the object slide?
A horizontal force of 200 N pushes a 10 kg block 5.0 m up along a plane inclined at 37 ° to the horizontal. Calculate the work done by the horizontal force
A father racing his son has three-fifths the kinetic energy of the son, who has half the mass of the father. What is the original speed of the son
A block of weight w = 20.0N sits on a frictionless inclined plane, which makes an angle theta = 30.0^\circ with respect to the horizontal, as shown in the figure. (Figure 1) A force of magnitude F = 10.0N , applied parallel to the incline, is just..
A positive charge of 0.800? C is located in a uniform field of 1.20×105 N/C. A negative charge of -0.400? C is brought near enough to the positive charge that the attractive force between the charges just equals the force on the positive charge du..
A lens is coated with material of indexof refraction 1.38. What thickness of coating should be used to give maximum transmission
1. a converging lens has a focal length of f 23 cm. an object is placed 44 cm from the lens. find the size of the
Two resistors when connected in series to a 110 line use one-fourth the power that is used when they are connected in parallel. calculate what is the resistance of the other
A vector has components of 7.0 units along the x axis and 9.0 units along the y axis. What is the angle between the vector and the x axis
Determine magnitude of the force from the ground on each front wheel. what is magnitude of the duck's velocity.
A motor attached to a 120 V/60 Hz power line draws an 8.10 A current. Its average energy dissipation is 810 W. What is the motor's resistance
A camera has a telephoto lens of 260-mm focal length. The lens can be moved in and out a distance of 18.5 mm from the film plane by rotating the lens barrel. what is the closest object distance that can be focused
A 5.0nC point charge is embedded at the center of a nonconducting sphere (radius = 2.0cm) which has a charge of -8.0nC distributed uniformly throughout its volume
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