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the electron beam in a cathode-ray tube is accelerated through apotential difference of 290 v the electrons then pass
the earth orbits the sun once a year 316 x 107 s in a nearlycircular orbit of radius 150 x 1011 m with respect to the
after a plant or animal dies its 14c content decreaseswith a half-life of 5730 years if an archaeologist finds
a diffraction grating has 15000 lines per inch what angle of deflection from the incident beam would you observe for
at the suns surface the gravitational force between the sunand a 500 kg mass of hot gas has a magnitude of 1370 n
a block rests on a horizontal frictionless surface a string is attached to the block and is pulled with a force of 450
a certain substance has a mass per mole of 39 gmol when 306 jis added as heat to a 280 g sample ofthis material its
a thin film of oil covers the surface of a glass of water white light is incident on the top surface a red spot is
a plane diving with constant speed at an angle of 530degrees with the vertical releases a projectile at an altitude
an aluminum clock pendulum having a period of 100 s keeps perfect time at 200degca when placed in a room at a
a student sits at rest on a piano stool that can rotate without friction the moment of intertia of the student-stool
a 12 kg mass is connected to a spring of constant 75 ncm and thesystem is sent into simple harmonic oscillationa what
when a resistor is connected across the terminals of an ac generator 112 v that has a fixed frequency there isnbsp a
a 12 kg block of aluminum is heated to 200 c it is quickly placed in an insulated tub of water at 0 c and sealed it all
estimate the total amount of u-235 needed to operate a 600 mwreactor for one year assuming e 40 and that each fission
assume that the orbit of the earth around the sun is circularthe distance from the earth to the sun is 15x1011 m the
a radio signal with a wavelength of 12 x10-4 m is sent to a distance asteroid isreflected and returns to earth 72 hours
a system containing an ideal gas at a constant pressure of 122 105 pa gains 2140 j of heat during the process the
suppose the space shuttle is in orbit 320km from the earths surface and circles the earth about once every909 minutes
a 30 kg mass collides and sticks to a 50 kg mass connected tothe end of a string if the masses move to a position 180
the length of a string of a pendulum is increased by a factor of9 by what factor has the period of the oscillation
consider an elastic collision in one dimension that involvesobjects of mass 25kg and 45kg the larger mass is initially
a college student went to an amusement park where they rode a ridecalled the rotor it is essentially a large hollow
a physical pendulum is constructed using a 235kg object having a moment of inertia of 27 kg-m2 aboutits center of mass
two blocks with masses m1 and m2 are released from the top of twofrictionless inclined planes of the same height making