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A particle of mass ,m, is at rest at the end of a spring(force constant=k)hanging from a fixed support. At t=0 a constant downward forcd F is applied to the mass and acts for a time T. Show that after the force is removed, the displacement of the mass from its equilibrium position (x=Xe, where x is down) is:
x - Xe =F/k[cosω(t-T) - cosω(t)]
where ω = omega
A long cylindrical shell has a uniform positive charge distribution per unit length, +2 lambda and with inner radius "r" and outer radius "2r". What is the ratio of the surface charge density on the inner to outer surface of the cylinder
two point charges 2.0 uc micro coulombs and -4.0 uc micro coulombs lie 0.45 m apart on the x-axis. are there any points
The longest recorded pass in an NFL game traveled 86 yards in the air from the quarterback to the receiver.Assuming that the pass was thrown at the optimal 45 angle, what was speed at which the ball left the quarterback's hand.
Two different balls are rolled (without slipping) toward a common finish line. Their angular speeds are shown to the right. determine how long does each ball take to reach the finish line
The Bragg angle for a certain reflection from a powder specimen of copper is 47.75º at a temperature of 293 K and 46.60º at 1273 K. Find the coefficient of linear expansion of copper
A rifle bullet is fired at an angle of 30º below the horizontal with an initial velocity of 800 m/s from the top of a cliff 80 m high. How far from the base of the cliff does it strike
A bicyclist is heading east at 6.6 m/s for 2.5 minutes when she realizes she left her cell phone in her apartment. What is her average speed and velocity for the round trip
A planet in another solar system orbits a star with a mass of 4.0×1030 kg. At one point in its orbit it is 250×106 km from the star and is moving at 35km/s.Take the universal gravitational constant to be 6.67 × 10−11 m2/s2 · kg andcalculate the se..
What is the separation distance between speaker and listener
a what is the escape speed on a spherical asteroid whose radius is 510 km and whose gravitational acceleration at the
A particle that has an 6.4-?C charge moves with a velocity of magnitude 4 × 105 m/s along the +x axis. It experiences no magnetic force, although there is a magnetic field present.
Two 2.5cm -diameter disks spaced 2.0 mm apart form a parallel-plate capacitor. The electric field between the disks is 4.1×105 V/m. How much charge is on each disk?
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