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an 800 g bullet is fired into a 230 g block that is initially at rest at the edge of a table of 100 m height the bullet
a 1200 kg car traveling initially with a speed of 250 ms in an easterly direction crashes into the rear-end of a 8200
the average speed of a nitrogen molecule in air is about 669 ms and its mass is 443times10-26 kg if it takes
an unknown mass of silver is pulled from a furnace where its temperature was 900c and placed on a very large block of
a turbine in an electric power plant rotates at 3600 rpm discover its angular speed in radianssecond and decide the
electrons are accelerated towards a television picture tube through a potential difference of 180 kva compute the
when light of wavelength 300 nm falls on a cobalt surface electrons are emitted that have a maximum kinetic energy of
a 32-g ice cube at its melting point of 273 k is dropped into a huge insulated container of liquid nitrogen suppose the
an electric motor rotating a workshop grinding wheel at a rate of 118 revmin is switched off suppose the wheel has a
a rotating wheel needs 800 s to rotate 290 revolutions its angular velocity at the end of the 800 s interval is 1000
the tub of a washer goes into itrsquos spin-dry cycle starting from rest and reaching an angular speed of 60 revs in 90
a centrifuge in a medical laboratory rotates at an angular speed of 3600 revmin when switched off it rotates during 500
a potters wheel moves uniformly from rest to an angular speed of 017 revsin 34 s1 discover its angular acceleration in
the graph in figure 22-14 shows the current during a device called a silicon diode1 does the diode obey ohms law2 what
a 200g hockey puck is launched up a metal ramp that is inclined at a 30 degree angle the coefficients of static and
a locomotive is pulling 12 freight cars each of which is loaded with roughly the same weight the mass of each can be
a projectile is thrown upward at 240 degree with the vertical and returns to the horizontal ground 125 a later with no
a rock is thrown from the roof of a building by an initial velocity of 100ms at an angle of 300degree above the
at the same moment one rock is dropped and one is thrown downward with an initial velocity of 21ms from the top of a
a 475 gram ball is traveling horizontally at 120 ms to the left when it is abruptly struck horizontally by a bat
a red laser emits photons by a wavelength of 635 nm1 if this laser has a power of 23 w how many photons does it emit in
a 1000 m long sight rod is viewed by a theodolite which has an objective lens of focal length 240mm the centre support
a surveyor out late accidentally leaves the car lights on each of the two front lights is 40 w and each of the two rear
a ferris wheel has radius 50 m and makes one revolution in 80 seconds a person weighing 670n is sitting on one of the
a 0200 nm photon collides with a stationary electron after the collision the electron moves forward and the photon