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a 0954-kg toy car is powered by four aa batteries 600 v total connected directly to a small dc motor the car has an
a particle is moving with a certain speed its speed and energy are being measured with respect to earth when the
a solenoid is made by tightly wrapping a wire 030mm in diameter around a 40mm diameter cylinder a if the inductance of
a coil with area 20m2rotates in a 0010t magnetic field at a frequency of 60hz how many turn are needed to generate a
a bug-zapper uses a voltage of 4000v provided by a transformer that is connected to a standard household source of
a beam of natural light with an irradiance of 330 wm2 impinges on the first of two consecutive ideal linear polarizers
an ac generator is designed to produce a maximum emf of 170v while rotating with an angular speed of 3600 rpm each coil
a uniform cord has a mass of 0300 kg and a length of 600 m see figure below the cord passes over a pulley and supports
a performer seated on a trapeze is swinging back and forth with a period of 885 s if she stands up thus raising the
imagine punch lives on the earth at rest judy traveling past the earth with a speed of 0600 c if a rocket moving in the
an intergalactic rock star bangs his drum every 110 s a person on earth measures that the time between beats is 210 s
a 2 kg block travels around a 05m radius circle with an angular speed of 12 rads the circle is parallel to the xy plane
the wavelength of visible light ranges from 400 rm nm to 700 rm nmpart 1 find the ranges of this lights frequencypart 2
the planet mars has a satellite phobos which travels in an orbit of radius 9378times106 m with a period of 032 days
standing on the surface of a small spherical moon whose radius is 675middot104 m and whose mass is 671middot1018 kg an
two identical 130- balls each 229 in diameter are suspended by two 350- wires as shown in the figure the entire
a small steel wire of diameter 10mm is connected to an oscillator and is under a tension of 57n the frequency of the
a glass windowpane in a home is 062 cm thick and has dimensions of 10m x 20m on a certain day the indoor temperature is
according to the ioc an olympic diving pool must be at least 5m deep what is the pressure at the bottom of a 5m deep
an airplane propeller is rotating at 3293 revmin when one of the blades breaks off at the hub treat the blade as a rod
a baseball approaches home plate at a speed of 480 ms moving horizontally just before being hit by a bat the batter
a reflecting telescope has a main mirror with fm 540 mm if an eyepiece with a magnification of 5 is used what is the
moving to the right is postive a 91 g object moving to the right at 17 cms makes an elastic head on collision with a 20
two ships are moving along a line due east the trailing vessel has a speed of 16 kmh relative to a land-based
a point source emits sound waves with a power output of 120 w at what distance will the decibel reading be 140 db which