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A block of mass 50 kg is free to slide on a horizontal frictionless surface. A constant force F acting 20° above the horizontal is applied to the block. As a result, the block has a horizontal acceleration of 4 meters-per-second squared. What is the magnitude of the applied force F?
Determine the simple harmonic motion of the spring what ac velocity is ball moving
when a dime (diameter 1.624 cm) is placed straight over it, bubble can be seen by looking down into the cube. What are upper and lower bounds of the range of the possible depths of the air bubble beneath surface.
Two electrons are confined in an extremely thin wire of length a. You may treat this wire as a one-dimensional infinite potential well. What is the energy of the ground state
Find the current in a 11.00 ? resistor connected to a battery that has an internal resistance of 0.25 ? if the voltage across the battery (the terminal voltage) is 24.00 V
A 9.0-kg box of oranges slides from rest down a frictionless incline from a height of 5.0 m, What is the coefficient of kinetic friction, µk, of the surface from A to B
An airplane is cruising along in a horizontal level flight at a constant velocity, heading due west. If the weight of the plane is 2.6´104 N, what is the net force on the plane
A boy runs 3.00 blocks north, 4.00 blocks northeast, and 5.00 blocks west. Determine the length and direction of the displacement vector
q1. a cooling unit for chilling the water of an aquarium gives specifications of mechanical power of 110 hp and cooling
An incandescent lightbulb draws 0.50 A, while a compact fluorescent with the same light output draws 125 mA. How do their energy-consumption rates compare
A particle of mass m is attracted to a force center with force of magnitude k/r2. Use plane ploar coordinates and find Hamilton's equations of motion.
What is the minimum diameter mirror on a telescope that would allow you to see details as small as 4.90 km on the moon some 384000 km away
A transmission line 200 km long has a resistance of 10 ? and carries a current of 1200 A. What is the potential difference between two pilons separated by 200 m
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