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an insulating solid sphere of radius a has a uniform charge density and carries a total positive charge qa calculate
a 1200 kg rocket without an internal propulsion system is launched and reaches a maximum height of 350 000 m determine
a 390-kg boy riding a 260-kg skateboard at a velocity of 570 ms across a level sidewalk jumps forward to leap over a
a child on ice skates with a mass of 35 kg and a velocity of 75 ms s undergoes a collision with a second child on ice
if the mass of a is 15 and the mass of b is 75 determine the acceleration of the system and the tension in the string
you are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the empire state
an airplane flies eastward and always accelerates at a constant rate at one position along its path it has a velocity
a small coin initially at rest begins falling if the clock starts when the coin begins to fall what is the magnitude of
a geiger counter registers a count rate of 8000 counts per minute from a sample of a radioisotope fourteen minutes
a neutral aluminum atom znbsp 13 is in its ground state electronic configurationhow many of its electrons are in
two solenoids a and b are wound using equal lengths of the same kind of wire the length of the axis of each solenoid is
a circular loop of wire with a radius of 40 cm is in a uniform magnetic field of magnitude 0060 t the plane of the loop
1 three people pull simultaneously on a stubborn donkey jack pulls directly ahead of the donkey with a force of 939 n
a hockey player uses her hockey stick to exert a force of 368 n on a stationary hockey puck which is resting on a
a 13500-kg jet airplane is flying through some high winds at some point in time the airplane is pointing due north
a 50 gram ball is thrown at a wall and bounces off its speed just before impact is 24 ms and its speed just after
another bicycle also with 03m radius wheels is moving such that the angular speed of each wheel is 75 rads if the
shown to the right is a truncated cone of length l cm traveling through a fluid at a speed of 880 ms the narrow end of
a person whose mass is m 560 kg steps on a mechanical bathroom scale placed on an inclined plane that makes the angle
an overnight rainstorm has caused a major roadblock three massive rocks of mass m1 584 kg m2 815 kg and m3 355 kg
suppose a 685 kg gymnast climbs a rope what is the tension in the rope if she climbs at a constant speednwhat is the
1 froghopper insects have a typical mass of around 129 mg and can jump to a height of 443 cm the takeoff velocity is
two forces are acting on a 0250-kg hockey puck as it slides along the ice the first force has a magnitude of 0365 n and
assume a uniformly charged ring of radiusnbsprnbspand chargenbspqnbspproduces an electric fieldnbsperingnbspat a
a proton moves at 702times107 ms perpendicular to a magnetic field the field causes the proton to travel in a circular