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a charged capacitor is connected to a resistor and switch as in the figure below the circuit has a time constant of 160
an astronaut travels to the nearest start system 10 light years away and returns at a speed of 05c how much has the
a crane lifts a 650-rm kg beam vertically upward 23 rm m and then swings it eastward 18 rm m how much work does the
the wavelength of a spectral line measured to he lambda on i earth is found to increase by 50 on a far distant galaxy
a capacitor consists of two plates which are 02mm apart from each other the combined area of the two plates measures
the horse on a carousel is 38 from the central axisif the carousel rotates at 80times102 how long does it take the
determine the temperature at which the resistance of atungstenwire will bethree timesits value at 20degc assume its
if two adjacentnatural frequencies of an organ pipe are determined to be 475 hzand 575 hz calculate the frequency and
a uniform chain with a mass of 123 kg per meter of length is coiled on a table one end is pulled upward at a constant
a well-insulated electric water heater warms 121kg of water from 200deg c to550deg c in270min find the resistance of
an electric heater carries a current of175a when operating at a voltage of 120 vwhat is the resistance of the
a lightbulb has a resistance of 230 when operating with a potential difference of 180v across it what is the current in
after emptying her lung a person inhales 41 l of air at 00 oc and holds her breath how much does the volume of the air
a log of mass 40 kg is dropped into river at 0degc if the relative density of the log is 08 what will be the volume of
in the bohr model of the hydrogen atom an electron in the9thexcited state moves at a speed of270104ms in a circular
the current in a 120-v reading lamp is 18 a if the cost of electrical energy is 0070 per kilowatt-hour how much does it
a proton beam in an accelerator carries a current of115microa if the beam is incident on a target how many protons
a280-kg block is initially at rest on a horizontal surface a horizontal force of760n is required to set the block in
an 8 g bullet traveling at 340 ms is shot into a 07 kg block of wood suspended from the ceiling by a 25 m long light
two wooden blocks rest on an inclined plane making an angle of 30 degrees to the horizontal the coefficient of friction
a car is traveling at520mih on a horizontal highwaya if the coefficient of static friction between road and tires on a
an extreme pogo stick utilizes a spring whose uncompressed length is 48 and whose force constant is 11times104 a 53-kg
two infinitely long straight and parallel wires carry current in opposite directions of 100 a the wires are a distance
a horizontal wire is hung from the ceiling of a room by two massless strings the wire has a length of 021 m and a mass
in a certain rlc circuit a46-resistor a11-mh inductor and a 5-microf capacitor are connected in series with an ac power