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a ball of mass m makes a head-on elastic collision with a second ball at rest and rebounds with a speed equal to 0390
neutron stars such as the one at the center of the crab nebula have about the same mass as our sun but a much smaller
the electric potential at a position located a distance of 195 mm from a positive point charge of 810x10-9c and 103 mm
two objects with masses of 380 kg and 540 kg are connected by a light string that passes over a frictionless pulley as
for a simple harmonic oscillator with k 40nm and a075 m the time between maximum velocity and maximum acceleration is
the hail comes straight down at a mass rate of mt0069 kgs and an initial velocity of v0 -15 ms suppose that the hail
a 134g baseball moving 286 ms strikes a stationary 520 kg brick resting on small rollers so it moves without
a large fish hangs from a spring balance supported from the roof of an elevator under what circumstances will the
doug uses a 29 horizontal force to push a 35 crate up a 15 -high 20 frictionless slope what is the speed of the crate
a 79-kg pilot in an aircraft moving at a constant speed of 495 ms pulls out of a vertical dive along an arc of a circle
in a 128t magnetic field directed vertically upward a particle having a charge of magnitude 880uc and initially moving
a 100 v potential difference is maintained across a 90 resistor for a period of 160 s what total charge passes through
a horizontal force does 50 j of work on a box while the kinetic friction force between the box and the floor also does
a solid sphere of mass 40kg and radius of 012m is at rest at the top of a ramp inclined 15degrees it rolls to the
a 250g bullet moving at 900 ms is fired through a 0900 kg block of wood emerging at a speed of 100 ms if the block had
a positively charged particle of mass 727e-8 kg is traveling due east with a speed of 870 ms and enters a 0250 t
bob m 60kg is wearing a sticky suit just as he reaches his desired speed of 6ms he reaches the edge of ice assume the
each of the current-carrying wires in the figure is long and straight and carries the current either into or out of the
suppose the initial speed of the proton in the figure is increasedpart adoes the radius of each half-circular path
after sliding down a snow-covered hill on an inner tube ashley is coasting across a level snowfield at a constant
the photograph shows an electron beam whose initial direction of motion is horizontal from right to left a magnetic
a parallel-plate capacitor carries a constant charge q ie q on one plate and -q on the other when a dielectric is
a proton is to orbit the earth at the equator using the earths magnetic field to supply part of the necessary
at a point near the equator the earths magnetic field is horizontal and points to the north if an electron is moving
a rower can row at 377 ms in still water he wants to row directly across a river 252 wide with a constant current of