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An ideal massless spring is hanging vertically. When a 0.45-kg mass is attached to the spring, the spring stretches by 4.9 cm before reaching a new equilibrium. Then the mass is displaced by 1.3 cm from the new equlibrium. What is the frequency of the resulting oscillation?
What is the magnitude and direction of the net force on the box?
A 10-cm-diameter parallel-plate capacitor has a 1.0 mmspacing. What is the magnetic field strength on the axis
In creating his definition of horsepower, James Watt, the inventor of the steam engine, calculated the power output of a horse operating a mill to grind grain or cut wood.
A simple pendulum makes 143 complete oscillations in 2.80 min at a location where g = 9.80 m/s2. Find the period of the pendulum
A light string that does not stretch changes from horizontal to vertical as it passes over the edge of a table. The string connects m1, a 3.4 kg block, originally at rest on the horizontal table at a height 1.27m above the floor, to m2, a hanging ..
We have a small Estes rocket at home that we have taken to a field to launch vertically upward. What is the maximum height of the rocket
A ceiling fan with 82cm diameter blades is turning at 70rpm. Suppose the fan coasts to a stop 29s after being turned off. Illustrate what is the speed of the tip of a blade 10s after the fan is turned off?
A 4.25 bullet traveling horizontally with a velocity of magnitude 375 is fired into a wooden block with mass 1.10 , initially at rest on a level frictionless surface. The bullet passes by the block and emerges with its speed reduced to 110 .
The 80 cm-tall, 68 cm wide tank is completely filled with water. The tank has marks every 10 cm along one wall, find Which is the lowest mark you can see
One has a capacitance of 2.0 µF and the other a capacitance of 4.0 µF. These two capacitors together store 4.50 10-5 C of charge. What is the voltage of the battery
Calculate the electric force that exists between two objects that are 0.500m apart and carry charges of 0.00450C and 0.00240C. Is this force attractive or repulsive
A 2.00 kg. frictionless block is attached to an ideal spring with force constant 300 n/m. At t=0 the block has velocity -4.0 m/s, what is the position of the block when its speed is 2.5 m/s
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