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a use the following data to calculate the speed vp of comet halley at perihelion comet halley orbits the sun with a
starting from rest a 450-kg block slides 300 m down a rough 300deg incline the coefficient of kinetic friction between
find the minimum initial speed of a projectile in order for it to reach a height of 2201 km above the surface of the
harold the hurler is a physics student who is renowned for his baseball pitching arm in order to determine the amount
power transmission lines often use a form of electric current called alternating current but in many regions such as
you are designing the section of a roller coaster ride shown in the figure previous sections of the ride give the train
you find a used battery and discover that it is no longer strong enough to power your cd player out of curiosity you
a device found at some amusement parks asks you to test your personal force by grasping two conducting bars one in each
a wire etched onto a computer chip carries a current of 0000000030 a in 18 milliseconds how many electrons flow past a
the burj khalifa in dubai is the worlds tallest building the structure is 828 m 27165 feet and has more than 160
3 amperes of current flow through a wirea what net charge flows past a point in the wire each secondb what is the net
a point charge of 840 mc is surrounded by an equipotential surface with a radius of 0262 m what is the electric
the negative black terminal of a 12 v automobile battery is grounded to the frame of a car if we arbitrarily take the
a propeller is modeled as five identical uniform rods extending radially from its axis the length and mass of each rod
two charged particles q1 250times103 c and q2 3850e-3 c are separated by a distance of 500 cma what is the electric
a duck is swimming down a river and passes a slow moving log if the duck is moving 250 times faster than the log but
as part of a carnival game a 0578-kg ball is thrown at a stack of 243-cm tall 0343-kg objects and hits with a perfectly
a system consisting of two positive particles is altered by an outside force so that its potential energy increases by
a 801-kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity
a 800 kg football player leaps straight up into the air with no horizontal velocity to catch a pass he catches the 0430
a 100 kg cannon fires a 10 kg steel ball horizontally with a speed of 50 mswhat is the recoil speed of the
a child on a sled is initially at rest on an icy horizontal surface the sled is pushed until it reaches a final
a sledge loaded with bricks has a total mass of 170 kg and is pulled at constant speed by a rope inclined at 199deg
an object 26 cm high is placed 15 cm from the surface of a polished silver sphere of radius 11 cm find the location
a brick weighing 30 n fall from a height of 15 m and sinks 7 m into the ground what is the average force on the rock