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a diffraction grating has 4436 linescm light that contains all wavelengths between 447 and 650 nm shines on the grating
three forces acting on an object are given by 1 245 560 n 2 530 13 n and 3 425 n the object experiences an
a 170-lb block rests on the floora what force does the floor exert on the blockb if a rope is tied to the block and run
you want to precut a set of 151 ohm strips of 140 gauge copper wire of diameter 1628 mm how long should each strip
a spacecraft is in orbit around a planet the radius of the orbit is 32 times the radius of the planet which is r 71466
consider three capacitors of capacitance 3600 pf 5800 pf and 00100 f what is the minimum capacitance you can obtain for
medical technicians use small centrifuges to isolate blood cells a typical unit holds six test tubes rotates at 3410
a physics student playing with an air hockey table a frictionless surface finds that if she gives the puck a velocity
you drive 96kmh east for 29min then 76kmh north for 46min let the x-axis point east and the y-axis north find your
when driving west toward the rocky mountains you see a peak 28circ above the horizon your gps gives your current
an inclined plane is sliding and accelerating on a horizontal frictionless surface there is a block at rest on the
what is the magnitude of the acceleration of a speck of clay on the edge of a potters wheel turning at 45 rpm
suppose the space shuttle is in orbit 400 km from the earths surface and circles the earth about once every 90 minutes
an arrangement of two pulleys as shown in the figure is used to lift a 460-kg mass a distance of 320 m above the
a plane is in a dive at the bottom of the dive is the maximum acceleration on the pilot this part of the dive can be
a 1190-kg block is on a horizontal frictionless surface on top of it is a second smaller block of 550-kg a horizontal
two very large charged parallel metal plates are 100 apart and produce a uniform electric field of 280times106 between
what is the electric potential 30times1011 from a proton charge e let v0 at rinfinitywhat is the potential energy of an
the driver of a 1780 car traveling on a horizontal road at 108 suddenly applies the brakes due to a slippery pavement
one of the most powerful cranes in the world operates in switzerland it can slowly raise a load of m 61840 tonnes to a
a tennis player tosses a tennis ball straight up and catches it after 30 sa what is the magnitude of the acceleration
three resistors r1 120 r2 180 and r3 360 are connected in parallel and in turn connected to a 700 v source with
william tell is shooting at an apple that hangs on a tree the apple is a horizontal distance of 200 m away and at a
two points are given in polar coordinates by r 30 m 350deg and r 40 m -350deg respectively what is the distance
a hollow non-conductiong sphere has a uniform charge density the inner and outer radius of the sphere are r1 and r2m