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two capacitors are connected to a battery the battery voltage is v 90 v and the capacitances are c1 200 f and c2 400
an extension cord is used with an electric weed trimmer that has a resistance of 187 the extension cord is made of
a defibrillator is used during a heart attack to restore the heart to its normal beating pattern a defibrillator passes
the inner and outer surfaces of a cell membrane carry a negative and positive charge respectively because of these
four identical charges 19 c each are brought from infinity and fixed to a straight line each charge is 055 m from the
for a glass lens n150 the focal length in the air is 10 cm and an object places on one side of it creates an image that
a block of mass 120 kg slides from rest down a frictionless 330deg incline and is stopped by a strong spring with k
the orbital speed of earth about the sun is 290times104 ms and its distance from the sun is 150times1011 m the mass of
a frictionless plane is 100 m long and inclined at 340deg a sled starts at the bottom with an initial speed of 600 ms
youre using a rope to pull a sled at constant velocity across level snowwith coefficient of kinetic friction 0050
consider the circuit in the figure below with resistors r1 2400 r2 4400 and r3 1100 and batteries with emfs 1 64
a 15 n horizontal force pushes a block weighing 48 n against a vertical wall the coefficient of static friction between
a square loop of wire consisting of a single turn is perpendicular to a uniform magnetic field the square loop is then
miners are trapped at the bottom of a 500m deep shaft you are located 50m away from the top of the shaft and the
a positive charge of q 540 uc is fixed in place from a distance of ri 420 cm a particle of mass m 550 g and charge q
two electrodes are placed in a calcium chloride solution and a potential difference is maintained between them
a floating ice block is pushed through a displacement d 24 m - 12 m j along a straight embankment by rushing water
a fireworks rocket explodes at a height of 100 m above the ground an observer on the ground directly under the
a rock of mass 545 kg breaks loose from the edge of a cliff and falls straight down the magnitude of the air resistance
a man seeking to set a world record wants to tow a 108000-kg airplane along a runway by pulling horizontally on a cable
a 1800-kg pile driver is used to drive a steel i-beam into the ground the pile driver falls 580 m before coming into
a 16 microf capacitor and a 23 h inductor are connected in series with a 60 hz source whose rms output is 119 vfind the
at the instant the traffic light turns green an automobile starts with a constant acceleration a of 18 ms2 at the same
a cart has a mass of 8518 g the attached string has a tension of 036 n and a displacement of 409 cma what is the work
a charged particle is moving horizontally westward with a velocity of 35 times 106 ms in a region where there is a