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consider two thick concentric conducting shells that have radii as follows shell one has an inner radius of a and an
a styrofoam ball of mass 0120 g is placed in an electric field of 6000 nc pointing downward what charge must be placed
a 250 cm by 250 cm parallel-plate capacitor has a 230 mm spacing the electric field strength inside the capacitor is
three 3 uc charges are at the three corners of a square of side 050 m the last corner is occupied by a -30 uc charge
one component of a magnetic field has a magnitude of 0040 t and points along the x axis while the other component has a
if three capacitors of values 10 15 and 20 microfarads each are connected in parallel what is the combined
a 40 m long horizontal boom of negligible weight can pivot at the wall to which it is attached and it is supported by a
an operating gearbox transmission has 200 hp at its input shaft while 190 hp are delivered to the output shaft the
an engineer claims to be able to compress 0100 kg of water vapor at 200 degrees c and 0100 mpa in a piston-cylinder
a car on a ferris wheel has an angular displacement of pie4 rad which corresponds to an arc length of 280mwhat is the
a 500-gram mass is attached to a horizontal spring of spring constant 20 nm and oscillates in simple harmonic motion on
a satellite circling the earth has an average power consumption of 3050 w assuming 56 efficiency for conversion of
find the inertia tensor for a uniform thin hollow cone such as an ice-cream cone of mass m height h and base radius r
a helicopter lifts a 72 kg astronaut 15 m vertically from the ocean by means of a cable the acceleration of the
a luge sled and its rider with a total mass of 85 kg emerge from a downhill track onto a horizontal straight track with
1 three astronauts propelled by jet packs push and guide a 1200 kg asteroid toward a processing dock exerting forces of
reflecting telescope is built with a 20-cm-diameter mirror having a 100m focal length it is used with a eyepiece
a converging lens with a focal length of 30cm and a diverging lens with a focal length of -52cm are 127cm apart a
suppose that a 1 kg standard body accelerates at 400 ms2 at 160 degrees from the positive direction of the x-axis owing
a circuit containing a 39h inductor has an alternating current applied to it if irms is 44 a and vp is 45v find the
a 50 v battery storing 430 kj of energy supplies 15 a of current to a circuit how much energy does the battery have
two identical wheels are moving on horizontal surfaces the center of mass of each has the same linear speed however one
an open-topped freight car with mass 24000 is coasting without friction along a level track it is raining very hard and
a resistor r 900 a capacitor c 025 microf and an inductor l 20 h are connected in series across a 240 hz ac source
a 63-kg skier is going down a slope oriented 31deg above the horizontal the area of each ski in contact with the snow