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A 1.70 kilogram rock is released from rest at the surface of a pond 1.00 meter deep. As the rock falls, a constant upward force of 4.40 Newton is exerted on it by water resistance. Determine the non conservative work done by water resistance on the rock? Determine the gravitational potential energy of the system? Determine the kinetic energy of the rock? Determine the total mechanical energy of the system, E, for the following depths below the water's surface. Let y = 0 be at the bottom of the pond.
johnny throws a shotput at an angle of 45.deg and it travels a horizontal distance of 30. meters. if he releases the
Find the net downward force on the tank's flat bottom, of area 2.25m2 , exerted by the water and air inside the tank and the air outside the tank
A fisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. What is the amplitude of each wave
Two blocks with masses, 2.5kg and 3.5kg, rest on a frictionless surface and are connected by a light string, What is the magnitude of the force in the string
What should the charge (sign and magnitude) of a particle of mass 1.21 be for it to remain stationary when placed in a downward-directed electric field of magnitude 610.
A uniform magnetic field is normal to the plane of a circular loop 10 cm in diameter made of copper wire (diameter 2.5 mm). At what rate must the magnetic field change with the time if an induced current of 10 A is to appear in the loop? The resistiv..
A thin 8.0 kilogram wheel of radius 34 centimeter is weighted to one side by a 2.0 kilogram weight, small in size, Find the moment of inertia about an axis through its CM
For each of these cases, decide whether or not the motion explained is an example of acceleration: An airplane starting to roll down the runway as it takes off. An airplane skidding to a stop on a runway. A football kicked straight up, at the peak of..
A 0.15 kg meter stick is balanced with the pivot point at the 18 cm mark. A weight of 3.2N is hung from the shorter end. Where should the weight be positioned in order to balance the meter stick?
A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long. When you gently pluck the upper end of the wire, What is the mass m of the stone
use the laws of classical mechanics to solve this problem. an atom of mass m moves in positive x direction with speed
A neutral atom has electrons completely filling the shells with principal quantum number n = 1, 2, and 3. How many protons does the nucleus contain
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