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An object of mass m=.200 kg is attached to a spring which is vibrating on a horizontell frictionless table. The spring has a spring constant k= 545 N/m. It is stretched initially to initial x=4.5 cm and then released from rest. Determine the final speed of the object when the final displacement of the spring is final x= 2.25 cm.
Male mosquitoes in the mood for mating find female mosquitoes of their own species by listening for the characteristic "buzzing" frequency of the female's wing beats. How many wing beats occur in one minute
A 1200-kg car rolling on a horizontal surface has speed = 65km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.3m. What is the spring stiffness constant of the spring?
A dockworker applies a constant horizontal force of 89.0 n to a block of ice on a smooth horizontal floor. The frictional force is negligible. What is the mass of the block of ice
A 21 kg solid door is 220 cm tall, 94 cm wide. What is the door's moment of inertia for rotation about the vertical axis inside the door, 17 cm from one edge.
The hunter uses a small powerboat that moves at a maximum speed of 9.5 km/h with respect to the water. Illustrate what is the minimum time necessary for crossing?
A coil of 39 turns is in the shape of an ellipse having a major axis of 12.0 cm and a minor axis of 8.84 cm. The coil rotates at 139 rpm in a region in which the Earth's magnetic field is 64.5 ?T. What is the maximum voltage induced in the coil if th..
A rod is measured to be 12cm by an observer moving at 0.60c with respect to the length of the rod. What is the proper length of the rod
Earthquakes at fault lines in Earth's crust create seismic waves, which are longitudinal (P-waves) or transverse (S-waves). Estimate the average bulk modulus of Earth's crust given
In order for a car to turn along a curve in the road, it must experience a centripetal acceleration (according to an inertial observer). what force is responsible for providing this acceleration
An electron and proton are separated by 2.0 nm. What is the net force on the system
In a certain region, the earth's magnetic field has a magnitude of 4.7 x 10-5 T and is directed north at an angle of 42° below the horizontal. Determine the bullet's electric charge
Two parallel metal rods form a plane inclined at 20.0° to the horizontal. The upper end of the rods are connected together by a resistor of 122.0 ?. What is the maximum speed of the bar
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