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The upward normal force exerted by the floor is 610 N on an elevator passenger who weighs 660 N.
A)What is the reaction force to the upward normal force exerted by the floor?
B) What is the reaction force to weight of the passenger?
determine the upward force on an airplane's wing if the average flow speed of air is 192 m/s above the wing and 164 m/s below the wing. The density of the air is 1.5 kg/m3 and the area of each wing surface is 26 m2.
If the 2 kg mass slides on a horizontal frictionless surface, what is the speed of the mass 4 kg while it has fallen a distance 0.4 m downward from its rest position.
A current of 27.0 mA is maintained in a single circular loop of 1.90 m circumference. A magnetic field of 0.870 T is directed parallel to the plane of the loop. Calculate the magnetic moment of the loop
A positive charge of 0.800? C is located in a uniform field of 1.20×105 N/C. A negative charge of -0.400? C is brought near enough to the positive charge that the attractive force between the charges just equals the force on the positive charge du..
An open container holds ice of mass 0.530 kg at a temperature of -15.7 Celsius . The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 810J/minute.
A camera has a lens with a focal length of 26.8 cm. how far from the film should the lens be placed
The temperature and pressure in a star's atmosphere are 6.40 multiply.gif 106 K and 0.0260 Pa. Calculate the rms speed of free electrons
A cannon tilted upward at = 31 fires a cannonball with a speed of 94 . At that instant, what is the component of the cannonball's velocity
King Arthur's knights fire a cannon from the top of the castle wall. The cannonball is fired at a speed of 50 m/s and at an angle of 35°. What is the ball's maximum height above the ground
Two passenger trains A and B, each 220 m long, pass a 50 m long railroad platform in Winnepeg. The trains are moving in opposite directions at equal speeds of 0.670c with respect to the ground, What is the difference in arrival times
A transformer has 100 turns in its primary windings and 500 turns in its secondary winding. calculate the secondary voltage and current
An object is 12.0 cm in front of a convex mirror. When the convex mirror is replaced with a flat mirror, What is the focal length of the convex mirror
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