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a 50 gram piece of styrofoam carries a net charge of - 50 x 10-6 c and floats above the center of a large horizontal
consider a system with a damping force undergoing forced oscillations at an angular frequency w omegaa what is the
a five-sided object whose dimensions are shown in the drawing is placed in a uniform magnetic field the magnetic field
two charged objects experience a mutual repulsive force of 086n if the charge of one of the objects is reduced by half
in a fast-pitch softball game the pitcher is impressive to watch as she delivers a pitch by rapidly whirling her arm
a proton with the mass m is projected into a uniform electric field that points vertically upward and has magnitude e
calculate the net torque about the asle of the wheel assuming that a friction torque of 40mn opposes the motion
a cooling fan is turned off when it is running at 175rpma what was the fans angular acceleration assumed constantb how
a simple harmonic oscillator has an amplitude of 35cm and a max speed of 28cms what is its speed when the displacement
if a 200 kg 3 m radius merry-go-round was spinning at 1 revs and you dropped a 25 kg bag of sand vertically onto the
the ground-state wavefuntion of a hydrogen atom is y1pia312e-ra where abohr radius a calculate probability that the
the amplitude of a 300-kg object in simple harmonic motion is 100 m the maximum speed of the object is 500 ms what is
a segment of wire carries a current of 25 a along the x axis from x -20 m to x 0 and then along the z axis from z 0
consider the circuit made of a r 100 resistor voltage source v and fuse f the fuse breaks if the instantaneous
a 30m long rigid beam with a mass of 130kg is supported at each end an 85kg student stands 13m from support 1 how much
use the natural and dual basis vectors to determine the metric tensors g i j and gi j and the line element for the
a square loop 10cm on a side carries a current i 1a and is placed 10cm away from a longstraight wire of current i 10a
the gravitational slingshot effect the planet jupiter moving in the negative x direction at its orbital speed with
a 94-v battery a 508- resistor and a 99-h inductor are connected in series after the current in the circuit has reached
a simple pendulum makes 139 complete oscillations in 310 min at a location where g 980 ms2a find the length of the
a uniform ladder of mass m and length l stands on rough horizontal ground and leans against a smooth vertical wall with
a typical flying insect applies an average force equal to twice its weight during each downward stroke while hovering
an electric point charge of q1 785 nc is placed at the origin of the real axis another point charge of q2 383 nc is
a ball is dropped out of a window near the top of a building if the ball accelerates toward the ground at a rate of 98
a 450 kg counterweight is attached to a light cord which is wound around a spool the spool is a uniform solid cylinder