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a proton an electron and an a particle accelerated through the same potential difference enter a region of uniform
a high powered 200 megawatt laser of beam diameter 600cm hits 100 absorptive black disk of diameter 400cm perpendicular
a long solenoid of radius a 100cm and length 150meters has n1 3500 turns and carries a clockwise variable current at
a uniform magnetic field is 30 degree to the plane of a circular loop 10 cm in diameter made of copper wire diameter 25
a rod moving in the positive x direction is measured by a stationary observer to have a length of 100meters and to be
a uniform cylinder radius 100 cm is mounted so as to rotate freely about a horizontal axis that is parallel to and 50
you wish to reduce the intensity of a beam of 1-mev gamma rays from 512 x 107 per second to 2 x 105 per second what
tritium has a half-life of 123 y and can also be used to date organic matter if the activity of tritium is determined
the label on a commercially purchased radioactive sample gives its activity as 16 microci the half-life of the sample
a model thermodynamic system consists of n particles whose allowed energies are integer multiples of e 0 e 2e 3e 4e a
a 50kg block is put on top of a 70kg block to cause the top block to slip on the bottom one while the bottom one is
the doppler effect using ultrasonic waves of frequency 221times106 is used to monitor the heartbeat of a fetus a
in a newtons ring experiment the radius of curvature r of the lens is 40 m and the lens diameter is 26 mmhow many
two radio-frequency point sources separated by 20 m are radiating in phase with 100 m a detector moves in a circular
an ambulance traveling at 36 ms approaches a car heading in the same direction at a speed of 26 ms the ambulance driver
suppose you pour water into a container until it reaches a depth of 18 next you carefully pour in a 10 thickness of
liquid nitrogen has a boiling point of 773 k and a latent heat of vaporization of 201 105 jkg a 450-w electric heating
bill is flying an airplane with air speed 300 ms going south mike is on the ground and sees the plane traveling 250 ms
at a given time t0 sample a contains 750000 radioactive nuclei during the 1 hour before t0 a total of 280000 decays
an lc circuit has a 25mh inductor and a 12uf capacitor the current is at its maximum value of 07a at t0how long does it
estimate the radiation pressure due to a 100 w bulb at a distance of 80 cm from the center of the bulb nm2estimate the
a parallel plate capacitor is made of two 5cm x 5cm square plates that are separated by 012mm the plates are charged to
the image of a tree on a 35 mm color slide is 17 mm high it is to be projected onto a screen 80 m from the slide and is
a tank holds a layer of oil 158 m thick which floats on a layer of syrup that is 066 m thick both liquids are clear and
a tanker ship is filled with 225 x 105 m3 of gasoline at a refinery in southern texas when the temperature is 172deg c