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The position of a particle is given by x = 3.9 cos pi t , where x is in meters and t is in seconds.
1. Discover the speed and acceleration of the particle when x = 2.3 m.
2. Discover the maximum speed and maximum acceleration of the particle.
A communications satellite is in a synchronous orbit that is 3.6 x107 m directly above the equator. The satellite islocated between two cities almost on the equator that are separated by a distance of 3.5 x 106 m.
how long does it take the sun to melt a block of ice at 0c with a flat horizontal area 1.0m2 and thickness 2.0cm ?
A meterstick of negligible mass has a 0.15kg mass at its 38cm mark and a 0.35kg mass at the 78cm mark. Where should the fulcrum be so the meterstick is balanced
An electron with kinetic energy 1.92 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 26.0 centimeter. Calculate the frequency of circling
A textbook of mass 2.09kg rests on a frictionless, horizontal surface. What is the moment of inertia of the pulley about its rotation axis
a certain toaster has a heating element made of nichrome wire. when the toaster is first connected to a 110-v source
The fundamental frequency of an open organ pipe corresponds to the middle C (261.6 Hz on the chromatic musical scale). The third resonance of a closed organ pipe has the same frequency. (Assume that the speed of sound in air is 343 m/s.) What is the ..
A 6.00kg block is pushed 9.25m up a smooth 39.0? inclined plane by a horizontal force of 73.0N. Calculate the initial kinetic energy of the block
A hardworking ant must supply 0.00655 N to pull a small piece of fruit at constant velocity over a distance of 10.00 cm up a small hill to the entrance of the colony. calculate the work done by the ant by pulling the piece of fruit up the hill
A rock weighing 8528 N rock with a volume of 24 L is completely submerged in mercury. The density of mercury is 13.6 kg/L. Determine the buoyant force on the rock
A physics student on Planet Exidor throws a ball, and it follows the parabolic trajectory shown in the figure. The ball's position is shown at 1.0 s intervals until t =3.0 s. At t = 1.0 s the ball's velocity has components Vx= 1.5 m/s, Vy = 3.0 m/s.
Three boxes, each of mass 22.0 kg are on a frictionless table, connected by massless strings. What is the net horizontal force on box A
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