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air traffic controllers usually describe the position of an aircraft relative to the airport by altitude, horizontal distance, and bearing. Suppose an aircraft is at altitude 500 m, distance 15 km, and bearing 35 degrees east of north. What are the x, y, and z components (in meters) of hte position vector? The x axis is east, the y axis is north, and the z axis is vertical.
What additional experiment can help you decide between these two possibilities.
What was the initial negative charge on one of the spheres, and what was the initial positive charge on the other? (Hint: Use charge conservation and solve for one of the initial charges. You would end up with a quadratic equation. The solutions g..
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.
At what angle must the cannon be fired
A person lifts a 950N box by pushing it up an incline. If the person exerts a force of 350N along the incline, what is the mechanical advantage of incline.
A 2.00-m tall basketball player is standing on the floor 10.0 m from the basket. If he shoots the ball at a 40 degree angle from the horizontal, at what initial speed must he throw the ball so that it goes through the basket without striking the b..
A 1700kg car travelling at a speed of 40m/s skids to the halt on wet concrete where f_k = 0.3. How long are the skid marks.
Estimate, from these data, the effective distance between the atoms.
An advertisement claims that a particular automobile can "stop on a dime." What net force would actually be necessary to stop an automobile of mass 920kg traveling initially at a speed of 56.0km/h in a distance equal to the diameter of a dime, whi..
In a ballistics test, a 23-g bullet travelling horizontally at 1300 m/s goes through a 40.0 cm-thick 450-kg stationary target and emerges with a speed of 900m/s. The target is free to slide on a smooth horizontal surface.
Yusef pushes a chair of mass = 51.0 across a carpeted floor with a force (the subscript 'p' here is lowercase and throughout the question) of magnitude = 170 directed at = 35.0 below the horizontal. The magnitude of the frictional force between the c..
A damped mass-spring system oscillates at 275-Hz. The time constant of the system is 2.0 s. At t = 0, the amplitude of oscillation is 3.20cm and the energy of the oscillating system is then 32 J.
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