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A particle of mass m is shot with an initial velocity vi making an angle θ with the horizontal as shown in Figure P11.17. The particle moves in the gravitational field of the Earth. Find the angular momentum of the particle about the origin when the particle is (a) at the origin, (b) at the highest point of its trajectory, and (c) just before it hits the ground. (d) What torque causes its angular momentum to change?
Bill is farsighted and has a near point located 132 cm from his eyes. Anne is also farsighted; however her near point is 82.9 cm from her eyes. Both have glasses that correct their vision to a normal near point (25.0 cm from the eyes), and both wear ..
Three forces acting on an object are given by f1 = (?2.05i + 6.30j) N, f2 = (4.70i ? 1.95j) N, and f3 = (?42.5) N. What is the direction of the acceleration
A railroad car with a mass of 20,000 kg rolls into a second stationary car with a mass of 40,000 kg. How fast was the first car moving before the collision
It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.2 s, illustrate what is the average force exerted on the ball by the wall
A hot air balloon decends toward the ground with a velocity of (1.6 m/s). A champagne bottle is opened to celebrate takeoff, expelling the cork horizontally with a velocity of (4.0 m/s) relative to the balloon.
It is desired to magnify readingmaterial by a factor of 2.5X when a book is placed 8cm behind alens. what type of lens is needed
A10.0 kg object sitting on a 30o slope is given a push by a horizontal force of 50.0 N for 2.50 s. How far uphill will the object be able to reach along the slope (no friction)
Light in a transparent material (index of refraction 1.333) strikes the boundary with another transparent material (n = 1.010). What is the critical angle for total internal reflection
a cylindrical aluminum pipe of length 1.57 m has an inner radius of 2.20 x 10-3 m and an outer radius of 2.80 x 10-3 m.
Suppose a neutrino is created and has an energy of 49.0 MeV. (a) Assuming the neutrino, like the photon, has no mass and travels at the speed of light, find the momentum of the neutrino. (b) Determine the de Broglie wavelength of the neutrino.
Illustrate what is the average emf that is induced in this coil if it is in a region where B=2.0 T upward, and the coil's plane is perpendicular to B?
A 0.15 kg particle moves along an x axis according tox(t) = - 14 + 2 t + 5 t2 - 4t3, with x in meters and t in seconds. What are projections of the net force acting on the particle at t = 3.4 s on(a)x-axis,(b)y-axis,(c)z-axis?
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