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A 400g rubber ball is dropped a vertical distance of 12m. It remains in contact by the pavement for .01 sec and rebounds to a height of 10m. What is the total change in momentum? What average force is exerted by the floor on the ball?
A car makes a round trip for 100m in 10 seconds. What is the average velocity?
Two conducting spheres, one of radius 0.010 m. and the other of radius 0.170 m., each have a charge 3.00E-08 C. and are very far apart. find the final potential (in volts) in each sphere
two very large metal parallel plates that are 25cm apart oriented perpendicular to a sheet of paper are connected
The entrance to a large lecture room consists of two side-by-side doors, one hinged on the left and the other hinged on the right. What is the diffraction angle of the sound under each of the following situations
A 7.05 bullet traveling at 520 m/s embeds itself in a 1.85kg wooden block at rest on a frictionless surface. Find the amplitude of the subsequent simple harmonic motion
an initially uncharged air-filled capacitor is connected to a 3.39-v charging source. as a result 9.57 times 10-5 c of
The flywheel of a steam engine begins to rotate from rest with a constant angular acceleration of 1.27rad/s2. It accelerates for 31.5 s, then maintains aconstant angular velocity.
An artificial lens is implanted in a person's eye to replace a diseased lens. The distance between the artificial lens and the retina is 2.82 cm. What is the power of the implanted lens
When the knob of a certain radio tuning capacitor is turned, the effective area of the plates in the interleaved position is reduced from 40 cm^2 to 10cm^2, What is the ratio of initial to the final capacitance
Calculate the focal length required of glasses to be worn, A pair of eyeglasses are designed to allow a person with a near-point distance of 2.52 m to read a road sign at a distance of 25.2 m.
A point source of light is submerged 2.3 m below the surface of a lake and emits raysin all directions. What is the maximum radius that this circle could have
the capacitor is disconnected from the battery and its plates moved so the distance between them is tripled.a. what is
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