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1 a scientist proposes construction of a space elevator by using a steel wire to raise a mass from the earths surface
two point charges q 1 -20 mu c and q 2 20 mu c are placed as shown in fig 212b the x-component of the electric
a cart with mass 320 g moving on a frictionless linear air track at an initial speed of 19 ms undergoes an elastic
discuss in detail why it might be dangerous to microwave raw eggs with their shell intact using the concepts learnt
a 230 kg mess kit sliding on a frictionless surface explodes into two 115 kg parts 232 ms due north and 590 ms 288deg
a strong weightless rope has a mass m hanging from the middle of it as shown the tension force on each rope is 25 n
a body is traveling at 570 ms along the positive direction of an x-axis no net force acts on the body an internal
what is difference between conducting and nonconducting charged
in a particle accelerator a proton reaches an acceleration of 90 times 1013 ms2 the mass of a proton is 17 times 10
a 720gg 50-cm-long metal rod is free to rotate about a frictionless axle at one end while at rest the rod is given a
an electron is moving at 343 x 106 msa what is the uncertainty in the velocity of the electron if you want to know its
a 199 kg solid sphere radius 0104 m is released from rest at the top of a ramp and allowed to roll without slipping
a 15000-kg helicopter is lowering a 4800-kg truck by a cable of fixed length the truck helicopter and cable are
a curve in a road has a banking angle calculated and posted for 80kmh the road is covered with ice so you drive slower
assume all temperatures to be exact and neglect significant figures for small changes in dimension an athlete has a
two circular plates of radius 522 cm possess a charge separation of 8252 c calculate the electric field between the two
a horizontal force does 50 j of work on a box while the kinetic friction force between the box and the floor also does
a 738-n man stands in the middle of a frozen pond of radius 40 m he is unable to get to the other side because of a
galvanometer deflection gradually decreases as the iron core is withdrawn how does faradays law acount for this
a ball of mass 0120 kg is dropped from rest from a height of 125 m it rebounds from the floor to reach a height of 0600
indiana jones is pushing back a 285 kg box which slides 43 m down a 29deg incline and kept from accelerating the
a 731-kn car is travelling at 599 mph when the driver decides to exit the freeway by going up a ramp after coasting 376
a particular heat engine has a useful power output of 480 kw and an efficiency of 250 in each cycle the engine expels
a boy 105 m above the ground in a tree throws a ball for his dog who is standing right below the tree and starts
an airplane is flying with a velocity of 870ms at an angle of 200 degrees above the horizontal when the plane is a