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a tube of radius 5 cm is connected to tube of radius 1 cm as shown above water is forced through the tube at a rate of
assume that an initially stationary gold nucleus remains motionless during a head-on collision with an 83 mev alpha
a ruby laser emits an intense pulse of light that lasts a mere 30 ns the light has a wavelength of 690 nm and each
a puck of mass 01 kg slides in a circular path on a horizontal frictionless table at an angular velocity of 20 rads it
a typical cost for electric power is 120 cents per kilowatt-hoursuppose your refrigerator uses 500 w of power when its
a 2 kg mass is attached to a spring of spring constant 20 nm at t 0 the spring is at its relaxed position and the
a high-speed flywheel in a motor is spinning at 500rpm when a power failure suddenly occurs the flywheel has mass 350kg
an electric fan is turned off and its angular velocity decreases uniformly from 490revmin to 210revmin in a time
you have available lenses of focal lengths 20 cm 40 cm 80 cm and 160 cm if you were to use any 2 of these lenses to
tritium 31 h is a heavy isotope of hydrogen with an atomic mass of 3016049 u normal hydrogen has an atomic mass of
an astronaut is in equilibrium when he is positioned 738 km from planet x and 472 km from planet y along the straight
a copper bowl of mass m1 contains a mass m2 of water both at temperature t which is below the boiling point of water a
suppose the flux through a loop changes uniformly from 12 wb to 18 wb in 650 s what is the magnitude of the emf induced
blue light of wavelength 446nm passes through a diffraction grating with a slit spacing of 15times10 3mm and makes a
a 40 kg ball is on the end of a 16 m rope which is fixed at o the ball is held at point a with the rope horizontal and
one possible means of achieving space flight is to place a perfectly reflecting aluminized sheet into earth s orbit and
a father pulls his children in a wagon for 25 minutes covering 125 miles on a level sidewalk he pulls with an average
two capacitors are connected parallel to each other and connected to the battery with voltage 30v let c1 95 u f c2
on an exo-planet a 70-kg astronaut steps on a scale and finds that the scale reads 246 n a survival pack is dropped a
three sinusoidal waves of the same frequency travel along a string in the positive direction of an x axis their
at its ames research center nasa uses its large 20-g centrifuge to test the effects of very large accelerations
a solenoid has a cross-sectional area of 70 x 10-4 m2 consists of 430 turns per meter and carries a current of 052 a a
a long straight wire suspended in the air carries a current of 82 a in the -x direction the wire runs along the x-axis
make a drawing of a metal rod that has length 12cm and a total mass of 70g including two metal loops at both ends which
a hockey puck b rests on a smooth surface of ice and is struck by a second puck a which was originally traveling at v