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An object of mass m = 2.6 kg falls from a height of 0.55 m on the top of a spring (see picture). The elastic constant is k = 72 N/m. What is the maximum compression of the spring? What is the maximum height that the object reaches once its pushed up by the spring?
A possible means for making an airplane invisible to radar is to coat the plane with an antireflective polymer. how thick would you make the coating
A 144-g baseball moving 29m/s strikes a stationary 5.25-kg brick resting on small rollers so it moves without significant friction. Determine the baseball's speed after the collision
The angular velocity of the rear wheel of a stationary exercise bike is 4.0 rad/s at time, t = 0, and its angular acceleration is constant and equal 2.0 rad/s^2. A particular spoke coincides with the +y axis at time, t = 0.
A nonconducting ring of radius of 11.6 cm is uniformly charged with a total positive charge of 10.0 µC. find the magnitude of the magnetic field on the axis of the ring 5.00 cm from its center
Find an expression for the rms value of the potential difference between any two of the phases. Assume that εrms is the familiar single-phase rms voltage.
A proton with kinetic energy of 6.20 × 106 eV is fired perpendicular to the face of a large plate that has a uniform charge density of ? = +2.50 ?C/m2. What is the magnitude of the force on the proton
A jogger accelerates from rest to 3.0 m/s in 2.0 s. A car accelerates from 38.0 to 41.0 m/s also in 2.0 s If the car travels further in those two seconds than the jogger does, how much further does it travel
The charge is now taken out from the spherical shell and placed outside it at a distance 25cm from the center of the sphere. Calculate the electric field at the center of the spherical shell
a steel piano string is 49.6 inches long. the diameter of the string 0.0421 inches. when struck this string produces
A 1100 kg car is moving at a speed of 40.0 m/s. How much work is required to bring the car to rest
A piano has approximately 1000 Newton's (225 lbs) of tension in each string. What is the total force inside of a piano in pounds
A series circuit with a 12kΩ resistor, a 12.0 V battery and a capacitor has a time constant of 55 μs. (a) Compute the capacitance of the circuit? (b) Compute the time it takes for the energy stored in the capacitor to be two thirds of its maximum val..
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