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a pencil beam of 200-kev photons is normally incident on a 14-cm-thick sheet of aluminum pressed against a 2-mm- thick
a narrow beam of 400-kev photons is incident normally on a 2 mm iron liner1 what fraction of the photons has an
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a 275 kg piano slides 44 m down a 30deg incline and is kept from accelerating by a man who is pushing back on it
a charged 2uf capacitor is connected in parallel with 05 mohm resistor a how long after the connection is made with the
two cars have collided at right angles at an intersection car a was eastbound car b was northbound the marks on the
a 1250 kg car drives up a hill that is 152 high during the drive two nonconservative forces do work on the car i the
what is the potential difference between the center of the disk and the edge use the following as necessary r b hint
a positively charged particle of mass 680 10-8 kg is traveling due east with a speed of 80 ms and enters a 031 t
two blocks of identical wood sit on slippery no friction ice you fire a bullet at each block at the first block you
a capacitor is connected across the terminals of an ac generator that has a frenquency of 460 hz and supplies a voltage
an energetic father stands at the summit of a conical hill as he spins his 21 child around on a 51 cart with a 21--long
the magnetic field produced by the solenoid in a magnetic resonance imaging mri system designed for measurements on
a block with mass m1 94 kg is on an incline with an angle 240deg with respect to the horizontal for the first
a box rests on top of a flat bed truck the box has a mass of m 160 kg the coefficient of static friction between the
suppose a star the size of our sun r0 695500 km rotates at a speed of 10 revolution every 12 days if it were to
air is flowing at steady state through a 5 cm diameter pipe at a flow rate of 035 molemin at p 5 bar and t 500 k it
water is drawn from a well in a bucket tied to the end of a rope whose other end wraps around a solid cylinder of mass
a projectile of mass m is fired from the ground with an initial speed vi at an angle of q above the horizontal at the
a firecracker resting on a level street explodes into three pieces of equal mass immediately after the explosion the
when a softball player swings a bat she accelerates it from rest to an angular velocity of 10 rads in a time of 026792
a satellite is in a circular orbit around an unknown planet the satellite has a speed of 160 104 ms and the radius of
a fully loaded slow-moving freight elevator has a cab with a total mass of 1100 kg which is required to travel upward
the figure shows a device that can be used to measure the speed of a bullet the device consists of two rotating disks
at an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis people sit in