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compute how much work must you do to push a 12 kilogram block of steel across a steel table muk06 at a steady speed of
a lamp hangs vertically from a cord in a descending elevator that decelerates at 32 ms2a if the tension in the cord is
the tension at which a fishing line snaps is commonly called the lines strength find what minimum strength is needed
our sun has a surface temperature of 6000ok the star antares has a surface temperature of 3400ok and a diameter 300
a single roller-coaster car is moving with speedv0 on the first section of track when it descends a 51 meter deep
a satellite is in a circular orbit around an unknown planet the satellite has a speed of 150 x 104 ms and the radius of
an inductor and a resistor are connected in series when connected to a 60 hz 90 v rms source the voltage drop across
an object is lifted from the surface of a spherical planet to an altitude equal to the radius of the planet as a result
when responding to sound the human eardrum vibrates about its equilibrium position assume an eardrum is vibrating with
standing on a balcony you throw your keys to a friend standing on the floor below one second after you release the keys
an archer shoots a 100 g arrow straight up in the air the bow was drawn back 50 centimeter by a 150 newton force find
a ferris wheel with a radius of 81 meter rotates at a constant rate completing one revolution every 45 secdetermine the
a 500 muf capacitor is initially charged to a potential of 160 volt it is then connected in series with a 375mh
a drag racer undergoing constant acceleration of 50 ms2 travels 65 m in the last 100 second of the racecalculate how
a charge q 40 muc is moved 025 meter horizontally from the origin to point p in a region where an electric field is 150
a fighter plane is launched from aircraft carrier with the aid of its own engines and a steam-powered catapult the
a hockey puck impacts a goalies plastic mask horizontally at122 mh and rebounds horizontally off the mask at 47mih if
in a pole sliding game among friends a 90 kilogram man makes a total vertical drop of 70 meter while gripping the pole
a small stone is thrown vertically downward at an initial speed of 14 ms from a height of 65 meter above the grounda
a student throws a ball vertically upward such that is travels 71 meter to its maximum height if the ball is caught at
a machine gun of mass 350 kilogram fires 500-g bullets with a muzzle velocity of 750 ms at the rate of 300 rounds per
a 20 kilogram softball is pitched to you at 20 ms you hit the ball back along the same path and at the same speed if
a 20 centimeter tall object is placed in front of a mirror a 10 tall upright image is formed behind the mirror 180 from
a 300 kilogram model rocket is launched straight up it reaches a maximum height of 100 x 102 meter above where its
a hydrogen atom initially in its ground state n1 absorbs a photon and ends up in the state for which n3find the energy