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Q. A Texas cockroach of mass 0.17 kg runs counter clockwise around the rim of a lazy Susan (a circular disk mounted on a vertical axle) that has radius 15 cm, rotational inertia 4.5 10-3 kg•m2, and frictionless bearings. The cockroach's speed (relative to the ground) is 2.0 m/s, and the lazy Susan turns clockwise with angular velocity ω0 = 3.2 rad/s. The cockroach find out a bread crumb on the rim and, of course, stops.
Two particles of charge Q(-L,0) and nQ(αL,0) where n = 10. When a third charge is placed at the origin, it is found that the force on it is zero. Find out α.
An 18 g rifle bullet travelling 180m/s buries itself in a 3.6kg pendulum hanging on a 2.8 m long string, which makes the pendulum swing upward in an arc. Verify the horizontal component of the pendulum's displacement.
What is the speed of the projectile
If the speed of sound is 1100 feet per second and a tuning fork oscillates at 440 cycles per second, what is the wavelength of sound produced.
A 1300- {rm N} crate slides 15- {rm m} down a ramp that makes an angle of 35^circ with the horizontal. If the crate slides at the constant speed, how much thermal energy is created.
A new circus act is called the Texas Tumblers. Lovely Mary Belle swings from a trapeze, projects herself at an angle of 53, and is supposed to be caught by Joe Bob, whose hands are 6.10 above and 8.02 horizontally from her launch point. You can ignor..
A 2.8 kg rectangular air mattress is 2 m long, 0.5 m wide, and 0.1 m thick. What mass can it support in water before sinking.
Some air is flowing from a wider tube to narrower. There is a difference in height of the liquid in the two sides of the U-shaped tube. Why is there such a difference in height.
What is a stopping distance
A constant horizontal force a pushes a 4.40kg FedEx package across a frictionless floor on which a xy coordinate system has been drawn. The package's x and y velocity components versus time t.
A 7.5 nC charge is located 1.8m from a 4.2 nC charge. Find out the magnitude of the electrostatic force that one charge exerts on the other. Is the force attractive or repulsive.
find the time rocket reaches the peak height of trajectory.
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