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6-lb slender rod is suspended from a steel wire which is known to have a torsional spring constant K = 1.5 ft. lb/rad. If the rod is rotated through 180° about the vertical and released, determine
(a) the period of oscillation,
(b) the maximum velocity of end A of the rod.
A 5.0 µC point charge is placed in an external uniform electric field of 1.60 104 N/C. At what distance from the charge is the net electric field zero
A rocket moves upward, starting from rest with an acceleration of 33.4 m/s2 for 3.47 s. It runs out of fuel at the end of the 3.47 s but does not stop. How high does it rise above the ground.
An object is in front of a converging lens (f = 0.370 m). The magnification of the lens is m = 3.60. Through what distance should the object be moved
A sphere of radius 20 cm and mass 1.8 kg starts fromrest and rolls without slipping down a 30 deg incline that is 10 mlong. Calculate its rotational speed when it reaches the bottom
a 1330 n uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. a w 1870
q. a 2500-kg sport utility vehicle travelling at 92 kmh can be stopped in 0.25 s if it hits a concrete wall. assume a
Hakeem throws an 8.50 g ball straight down from a height of 2.0 m. The ball strikes the floor at the speed of 7.5 m/s. What was the initial speed of the ball? Suppose that air resistance is negligible.
A 55-cm-long wire with a mass of 10.6 g is under a tension of 53.0 N. Both ends of the wire are held rigidly while it is plucked. What is the frequency of the third harmonic
A parallel plate capacitor has plates 2.00 cm by 3.00 the plates are saparated by a 1.00 m thickness of teflon. find the capacitance of this device
Calculate the area the parallel plates of such a capacitor must have if they are separated by 4.00 A?µm of Teflon. m2
A battery is designed to have an EMF of 12.0V. When the battery is connected to an unknown resistor in series the terminal voltage drops down to 10.0V. what is the value of the unknown resistor
Rumor has it that a photographic camera on a spy satellite can read the license plate of an automobile on the ground. what must be the diameter of the aperture of the camera
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