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the earth can be approximated as a sphere of uniform density rotating on its axis once a day the mass of the earth is
the track near the top of your favorite roller coaster has a circular shape with a diameter of 29 m when you are at the
a string 13 m long with a mass of 39 g is stretched between two fixed points with a tension of 93 n find the frequency
a copper k 390 jsmiddotmmiddotcdeg pipe with an outer radius of 0014 m runs from an outdoor wall faucet into the
your average speed on the first half of a car trip is 750 kmh how fast do you have to drive on the second half of the
a test tube contains 286x10-4 m3 of liquid carbon tetrachloride 1240x10-6 cdeg-1 at a temperature of 670degc the test
on the planet arrakis a male ornithoid is flying toward his stationary mate at 25 ms while singing at a frequency of
you are pulling a suitcase through an airport at a constant speed the handle of the suitcase makes an angle of 60
the position of a 064-kg mass undergoing simple harmonic motion is given by x 0160 m cos pt16 what is the maximum net
a steel piano wire vibrates in its first harmonic mode with a fundamental frequency of f1 410 hzhow many harmonics can
a 0635 m long guitar string is vibrating at its second harmonic frequency of 490 hz what is the wavelength ofa the
a 175 kilogram block is at rest on a frictionless incline that makes an angle of 250 degress with respect to the
in a fluorescent tube of diameter 3 cm 7 1018 electrons and 175 1018 positive ions with a charge of e flow through a
a 10 gauge copper wire carries a current of 24 a assuming one free electron per copper atom calculate the magnitude of
a circular disk of radius 0010 m rotates with a constant angular speed of 50 revs what is the acceleration of a point
a force of 2973 n is applied tangentially to a wheel of radius 034 m this force causes an angular acceleration of 120
if the car is moving at 30 ms at the bottom of the dip its mass is 800 kg and the radius of curvature for the dip is 20
a 150 pf capacitor and a 600 pf capacitor are both charged to 2 kv they are then disconnected from the voltage source
a parallel-plate capacitor with plates of area 600 cm2 is charged to a potential difference v and is then disconnected
a water pump lifts water from a well depth of 30 to ground level how much work does the pump do by moving 3 m3 of
four point charges of magnitude 39 microc are at the corners of a square of side 3 ma find the electrostatic potential
the left plate of a parallel plate capacitor carries a positive charge q and the right plate carries a negative charge
a pitcher pitches the ball m 150 g at 403 ms the batter makes contact with the ball for 0001 s causing the ball to
a 10000 kg empty railroad car moving at 3 ms collides with a loaded railroad car weighing 196000 n and couples with it
outer space is filled with a sea of photons created in the early moments of the universe the frequency distribution of