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An airplane is traveling at 117 mph (relative to the air), 13 degrees E of N, at an altitude of 5000 ft. It encounters a cross-wind, blowing 16 m/s (relative to the earth) @ 39 degrees S of W. At what velocity must the plane fly (relative to earth) to maintain her original heading? At what angle and which direction?
Legend has it that, many centuries ago, Archimedes jumped out of his bathtub and ran across town naked screaming "Eureka!" after he solved an especially difficult problem.
wo converging lenses are placed 60.0 cm apart. The intial object is placed 28.7 cm in front of the first lens. what is the total linear magnification for the system
A marble (radius 1.5 cm and mass 5.0 g) rolls without slipping down a ramp of vertical height 26 cm. What is the speed of the marble
A body is traveling at 5.70 m/s along the positive direction of an x-axis. No net force acts on the body. What is the speed of the forward part
A metal rod is 40.127cm long at 20.3 oC and 40.149cm long at 45.0 oC. Calculate the average coefficient of linear expansion of the rod's
The left ventricle of the heart accelerates blood from rest to avelocity of +24cm/s. How much time does blood take to reach its final velocity?
The position of a 1.2kg mass is given by x = (2t^3 - 3t^2)m, where t is in seconds. What is the net horizontal force on the mass at t = 0s
The average lifetime of a pi meson in its own frame of reference (i.e., the proper lifetime) is 2.6 10-8 s. What distance would it travel if time dilation did not occur
A step-down transformer has a turns ratio of 1:10, and its primary is connected across the terminals of a standard 120-V wall socket
A woman on a rocket traveling at 0.35c (with respect to Earth) observes a meteor come from in front of her and pass her at 0.62c. How fast is the meteor moving with respect to Earth?
It is known that the electric force of repulsion between two electrons is much stronger than the gravitational attraction. For two electrons at a distance d apart, calculate the ratio of the size of the electrostatic repulsion to that of the gravi..
Rubber stopper attached to one end of the string and 100 g mass attached to the other end. A student gets the rubber stopper going in a horizontal circle above her head.
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