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A charge of -4.34C is fixed at the center of a compass. Two additional charges are fixed on the circle of the compass (radius = 0.122 m). The charges on the circle are -5.56C at the position due north and +6.30C at the position due east. What is (a) the magnitude and (b) direction of the net electrostatic force acting on the charge at the center? Specify the direction as an angle relative to due east.
A tennis player tosses a tennis ball straight up and catches it after 3.0 s. Find the initial velocity of the ball
The longest stuffed toy ever manufactured is a 420 meter snakemade by Norwegian children. What would be the projectile's initial speed
1 a. show the quantum confinement effects in quantum wellsnbspb. outline the density of states for 3d 2d 1d and 0d
A projectile of mass 0.610 kg is shot straight up with aninitial speed of 15.2 m/s. (a) How high would it go if there were no air resistance? (b) If the projectile rises to a maximum height of only 9.95 m, determine the magnitude of the average force..
A rocket A moves past a lab B at a speed of .9c. A technician in the lab records 3.5 s for the time of an event that occurs on the rocket. What is the time as reckoned by a person aboard the rocket?
a 747 jetliner lands and begins to slow to a stop as it moves along the runway. if its mass is 3.41times105 its speed
all spiders have special organs that make them exquisitely sensitive to vibrations. web spiders detect vibrations of
A 10.0-g wad of sticky clay is hurled horizontally at a 110-g wooden block initially at rest on a horizontal surface. what was the speed of the clay immediately before impact
An electron initially at rest is accelerated between two parallel plate 2.000 cm apart, What kinetic energy does the electron have when it hits the positive plate
11.0 of aluminum at and 22.0 of copper are dropped into 49.0 of ethyl alcohol at . The temperature quickly comes to 25.0. What was the initial temperature of the copper
question a woman on a rocket traveling at 0.35c with respect to earth observes a meteor come from in front of her and
A projectile is fired directly upward at such an initial velocity that it reaches half its height of 45 meters. Calculate its speed at the following intervals:
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