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a resistance r and a 34-h inductance are in series across a 60-hz ac voltage the voltage across the resistor is 34 v
a 75 f capacitor is charged to 34 v and is then connected across a 11-mh inductor a how much energy is stored in the
a tradesman sharpens a knife by pushing it against the rim of a grindstone the 35 cm diameter stone is spinning at 200
a 210 turn coil has an area of 48 cm2 and rotates in a magnetic field of 05 t a what frequency will generate a maximum
an rlc circuit is driven by a generator with an emf amplitude of 863 v and a current amplitude of 150 a the current
a series rlc circuit is driven by a generator at a frequency of 2280 hz and an emf amplitude of 189 v the inductance is
an archer pulls her bowstring back 0370 m by exerting a force that increases uniformly from zero to 227 n a what is the
a horizontal force of 150 n is used to push a 450 kg packing crate a distance of 510 m on a rough horizontal surface if
an energy-efficient lightbulb taking in 230 w of power can produce the same level of brightness as a conventional bulb
a source emits sound of wavelength 254m an 274m in air use the speed of sound343msa write the equations of these two
an industrial laser is used to burn a hole through a piece of metal the average intensity of the light is s 138 109
two in-phase speakers 20 m apart in a plane are emitting 1800 hz sound waves into a room where the speed of sound is
the fundamental frequency of an open-open tube is 1800hz when the tube is filled with zero celicus helium what is its
1 what are the three longest wavelengths for standing waves on a 294-cm-long string that is fixed at both ends2 if the
neil a armstrong was the first person to walk on the moon the distance between the earth and the moon is 385 108 m find
the spaceship enterprise 1 is moving directly away from earth at a velocity that an earth-based observer measures to be
suppose that a police car on the highway is moving to the right at 30 ms while a speeder is coming up from almost
suppose one gallon of gasoline produces 11 x 108 j of energy and this energy is sufficient to operate a car for twenty
a 300-g bullet traveling horizontally at 400 ms hits a 300-kg wooden block which is initially at rest on a smooth
a woman is 17 m tall and has a mass of 51 kg she moves past an observer with the direction of the motion parallel to
a meterstick pivoted about a horizontal axis through the 0-cm end is held in a horizontal position and let go awhat is
item 4 to start her lawn mower julie pulls on a cord that is wrapped around a pulley the pulley has a moment of inertia
a 2500- ferris wheel accelerates from rest to an angular speed of 021radsec in 14sec approximate the ferris wheel as a
an amusement park ride consists of a swing hanging from a chain attached to a spinning mechanism the swing forms a
a 15 g bullet is fired at a 21 kg wooden block which is hung at the end of 135 meter long string as a ballistic