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an air conditioner draws 15 a at 220-v ac the connecting cord is copper wire with a diameter of 1446 mma how much power
one block has a mass m 500 g the other has mass m 460 g and the pulley which is mounted in horizontal frictionless
the wires in a household lamp cord are typically 30 mm apart center to center and carry equal currents in opposite
a 1580 kg block of granite is pulled up an incline at a constant speed of 143 ms by a cable and winch the indicated
a horizontal force of magnitude 415 n pushes a block of mass 423 kg across a floor where the coefficient of kinetic
a very slippery ice cube slides in a vertical plane around the inside of a smooth 20 cm diameter horizontal pipe the
a 20 hp electric motor on a water well pumps water from 10 m below the surface the density of water is 10 kg per
its your birthday and to celebrate youre going to make your first bungee jump you stand on a bridge 110 m above a
a car needs to generate 750 hp in order to maintain a constant velocity of 218 ms on a flat road what is the magnitude
the maximum induced emf in a generator rotating at 249 rpm is 44 v how fast must the rotor of the generator rotate if
the image behind a convex mirror radius of curvature 86 cm is located 17 cm behind the mirrora where is the object
a metal rod 050 m long moves with a speed of 20 ms perpendicular to a magnetic field if the induced emf between the
in measuring an rl circuit you find that the total resistance of the circuit is 60 ohms and that t12 is 0000836 seconds
a meter stick is hinged at its lower end and allowed to fall from a vertical postion iof its moment of inertia is ml23
a 10 ohm resistor a 120 microfarad capacitor and a 170 mh inductor are connected in series with a 155 v generatora at
a series rcl is at resonance and contains a variable resistor that is set to 175 ohms the power delivered to the
an isolated capacitor of unknown capacitance has been charged to a potential difference of 119 v when the charged
a capacitor is connected across the terminals of an ac generator that has a frequency of 440 hz and supplies a voltage
a parallel-plate capacitor has 185 cm2 plates that are separated by 572 mm with air between them if a 120 v battery is
a 15micro f capacitor is joined in series with a 35micro f capacitor and a 12 volts batterywhat is the potential
a 800 kg bullet traveling at 475 ms embeds itself in a 169 kg wooden block at rest on a frictionless surface the block
a certain type of laser emits light that has a frequency of 57 1014 hz the light however occurs as a series of short
an rc series circuit has r 710 omega and c 550 nf the series combination is connected across a 250 v rms 64 hz power
for tests using a ballistocardiograph a patient lies on a horizontal platform that is supported on jets of air because