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a spring has a radius of 26 cm and an inductance of 75 muh when extended to a length of 09 m find an approximate value
derive a formula for the horizontal range r of aprojectile when it lands at a height h above its initialpoint for h lt
a cannon of mass 1500 kg fires a 10-kg shell with a velocity of 200ms at an angle of 45 above the horizontal find the
engineers redesign a cars wheels with the goal of decreasing eachwheels angular momentum by 30 for a given linear speed
a speeder is pulling directly away and increasing his distance from a police car that is moving at 23 ms withrespect to
an electron is shot into one end of a solenoid as itenters the uniform magnetic field with in the solenoid its speedis
a 070-kg disk with a rotational inertia given by mr22 is free torotate on a fixed horizontal axis suspended from the
at the local playground a child on a swing has a speed of 202 ms when the swing is at its lowest point a to what
a 50kg woman is in a rotor with a 2m radius laying against theinner surface the friction between the womanrsquos
a baseball catcher moves his glove away from a 360 ms fastball as he catches it if the averageforce he exerts on the
a solenoid has 137 turns of wire uniformly wrapped around anair-filled core which has a diameter of 6 mm and a length
an aluminum wire has the same resistance as acopper wire of the same length find the ratio of the aluminumwires
a hall-effect probe operates with a 120 -ma current when the probeis placed in a uniform magnetic field of magnitude
a merry-go-round rotates from rest with an angular acceleration of 150 rads2 how long does it take to rotate througha
a 12 kg block is held at rest against a spring with a forceconstant k730 nm intially the spring is compressed a
consider twosections of wires with currents as shown abovethe force on the short wire due to the long wire is toward
as a sailboat sails 530 m due north abreeze exerts a constant force f1 onthe boats sails this force is directed at an
a 12 kg block of steel is at rest on ahorizontal table the coefficient of static friction between blockand table is
a bedroom bureau with a mass of 57 kgincluding drawers and clothing rests on the floora if the coefficient of static
what is the smallest radius of an unbanked flat track around which a bicyclist can travel if her speed is 26 kmh and
suppose the coefficient of static friction between the road and the tires on a car is 060 and the car has no negative
in the figure a slab of mass m1 19kg rests on a frictionless floor and a block of massm2 12 kg rests on top of
the drawing shows two boxes resting on frictionless ramps onebox is relatively light and sits on a steep ramp the other
a photon of energy 50 mev moves along the x-axis and comptonscatters with an electron initially at rest after the
the magnetic field of the earth at acertain location is directed vertically downward and has amagnitude of 500 mut a