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Refer to Interactive Solution 19.25 to review one way in which this problem can be solved. Two protons are moving directly toward one another. When they are very far apart, their initial speeds are 1.20 x 105 m/s. What is the distance of closest approach?
Two bars of identical mass are at 30 °C. One is made from glass and the other from another substance. The specific heat capacity of glass is 840 J / (kg • C°).
Two speakers, one directly behind the other, are each generating a 429-Hz sound wave. What is the smallest separation distance between the speakers that will produce destructive interference at a listener standing in front of them? Take the speed of ..
A 76 g, 40-{rm cm}-long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 10 g ball of clay travelling horizontally at 2.70 m/s hits and sticks to the very bottom tip of the rod. To what maximum angle, measured fro..
The motion of peg P is constrained through the lemniscate curved slot in OB and by the slotted arm OA.
A 95 long train begins uniform acceleration from rest. The front of the train has a speed of 25 while it passes a railway worker who is standing 170 from where the front of train started. What will be the speed of the last car as it passes the wor..
Two particles are fixed on x-axis. Particle 1 of charge q1 = -2×10^-7 C at x = 20 cm and particle 2 of charge q2 = +8×10^-7 C at x = 70 cm. At what x coordinate on the axis is net electric field produced by the particles equal to zero.
A second electron directly below it exerts an electrostatic force on the first electron that exactly cancels the gravitational force. What is the distance between the two electron
Suppose the projectile is traveling 85.0 m/s at its maximum height of y = 272 m. Explain how much work has been done on the projectile by air friction?
A hill that has a 17.2 % grade is one that rises 17.2 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal?
what is the Tension in the string, distance of spheres from one another at equilibrium, the charge on each sphere.
Presume that you loft the ball with the initial speed of v = 17.6m/s, at an angle of θ = 50.7° above the horizontal. At this instant your opponent is d = 11.19m away from the ball. He begins moving away from you 0.35s later, hoping to reach the ba..
A pitcher throws a fastball horizontally at a speed of 150 km/h toward home plate, 18.4m away. If the batters combined reaction and swing times total 0.37s, how long can batter watch the ball after it has left the pitcher's hand before swinging? In t..
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