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what is the gravitational force between two 15-kg packages that are 35cm apart what fraction is this weight of one
an iron cube floats in a bowl of liquid mercury at0o ca if the temperature is raised to 25o c will thecube float higher
two very small spheres are initially neutral and separated bya distance of 070 m suppose that350 1013 electrons are
an airplane driving at an angle of 30 degrees with the horizontal drops a bag of dans from an altitude of 800 m the
a track has a radius of1735 m if you bike ride-around the track making 1800 rev in525 minutes what is your average
a bucket of mass 160 kg is whirled ina vertical circle of radius 140 m atthe lowest point of its motion the tension in
a 040kg soccer ball approaches a player horizontally with avelocity of 20ms to the north theplayer strikes the ball and
a 17kg object is at rest a3n force to the right acts on theobject during a time interval of 15sa what is the velocity
a bottle has a mass of 3500 g whenempty and 9849 g when filled withwater when filled with another fluid the mass is
a hydraulic lift is used to jack a 1070 kg car 13 cm offthe floor the diameter of the output piston is 18 cm and
an 0775 kg football is thrown witha speed of 146 ms a stationary receivercatches the ball and brings it to rest
a 10 kg test rocket is fired vertically its fuel propels it to a heaight of 100 m at which point the engine shuts off
a satellite orbits neptune 4000 km above its surface given that the mass of neptune is 102 x 1026 kg and the radius of
a child sitting 118 m from the centerof a merry-go-round moves with a speed of 120 msa calculate the centripetal
for womens volleyballthe top of the net is 224m above the floor and the court measures90m on each side of the net using
a ball is thrown straight up takes 225s to reach a hieght of368ma what was its initial speedb what is its speed at this
a stone is dropped into the water from a bridge 144ft above thewater another astone is thrown vertically down 1s after
two railroad cars each of mass 6400 kgare traveling 94 kmh toward each otherthey collide head-on and come to rest how
a car travels up a hill at constant speed of 40kmh and returnsdownhill at the speed of 60kmh calculate the average
an automobile engine develops a torque of 280 nm at 3800 rpm what is the power in watts and in
antarctica is roughly semicircular in shape with a radius of2000km the average thickness of the ice cover is 3000m how
ther normal hydrogen atom consists of a proton nucleus and an orbital electron assume that the electron orbit is
the launching speed of a certain projectile is five times the speed it has at its maximum height calculate the
a 27-kg box is released on a horizontalsurface with an initial speed of 29 ms it moves on the surfacewith a
a person scuffing her feet on a wool rug on a dry day accumulates a net charge of -46 microc how many excess electrons