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in an x-ray tube electrons with energy 38 kev are incident on a cobalt z 27 target compute the cutoff wavelength for
assume a straight 2 millimeter diameter copper wire could just float horizontally in air because of the force due to
a 63 kilogram sprinter starting from rest runs 41 meter in 7 second at constant acceleration1 find the magnitude of the
determine how much work must you do to push a 10 kilogram block of steel across a steel table k06 at a steady speed of
two tugboats pull a disabled supertanker each tug exerts a constant force of 170 times 106 n one at an angle 19 degree
a magnifying glass with a focal length of 97 centimeter is used to read print located at a distance of 80 centimetera
an 106 millimeter focal length lens is used to focus an image on the sensor of a camera the maximum distance allowed
the length of a telescope is 2 meter and the focal length of the objective is 2 centimeter evaluate what is the focal
the focal lengths of the objective and the eyepiece in a microscope are 029 centimeter and 25 centimeter
two parallel wires 13 centimeter apart carry 19 amp currents in the similar direction find the magnitude of the
the eyepiece of a compound microscope has a focal length of 270 centimeter and the objective lens has f 0740
the output voltage of a 87 watt transformer is 14 volt and the input current is 24 amp assume 100 percent efficiency
an ac voltage source is connected in series with a 15 mf capacitor and a 750 omega resistor using a digital ac
four 150 volt cells are connected in series to a 13 ohms light bulb if the resulting current is 047 amp find what is
a circular loop in the plane of a paper lies in a 075t magnetic field pointing into the paper the loops diameter
a hanging wire has a length of 190 meter when a steel ball of mass 58 kilogram is suspended from the wire the wire
determine how many turns of wire would be required to make a 120-mh inductor out of a 27 centimeter long air-filled
two lenses one converging with focal length 21 centimeter and one diverging with focal length 11 centimeter are placed
an 108 millimeter focal length lens is used to focus an image on the sensor of a camera the maximum distance allowed
the potential along x-axis in a region of space is v 350x2 520 v where x is in meters determine the electric
light of wavelength 630 nanometer falls on a slit that is 370 x 10-3 millimeter wide determine how far the first bright
determine how many moles of h2o molecules are in a 400 m3 container at a pressure 800 x 105 nm2 and temperature
compute the magnitude of the force of an electron traveling 395 x 10-5 meter per second horizontally to the east in a
a red laser from the physics lab is marked as producing 6328 nanometer light when light from this laser falls on two
if an electric wire is allowed to produce a magnetic field no larger than that of the earth 075 x 10-4 t at a distance