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a lens for a 35mm- camera has a focal length given by 51mma what is the magnification of the image on the
a pulsar is a collapsed rotating star that sends out a narrow beam of radiation like the light from a lighthouse with
the battery charger for an mp3 player contains a step down transformer with a turns ratio of 132 so that the voltage of
a tennis ball is shot vertically upward in an evacuated chamber with an initial speed of 200 ms at time t0how high does
an astronaut on the surface of the moon fires a cannon to launch an experiment package which leaves the barrel moving
a rectangular loop of wire with sides 020 and 035 m lies in a plane perpendicular to a constant magnetic field the
an object placed 149 cm from a concave mirror produces a real image 123 cm from the mirror if the object is now moved
if a virtual image is formed 100 cm along the principal axis from a convex mirror of focal length -150 cm how far is
a circular loop of radius 115 cm is placed in a uniform magnetic fielda if the field is directed perpendicular to the
a 9v battery is connected across a capacitor of 20uf through a switch which is initially open what is the amount of
suppose the magnitude of the electric field in an electromagnetic wave is doubleda by what factor does the magnitude of
a lightning bolt consisting of electrons moves from the cloud to the ground near the equator it carries a current of
one yoga exercise known as the downward-facing dog requires stretching your hands straight out above your head and
a particular wire has a diameter of 17 mm and length of 13 m if its resistance is 15 meter-ohms what is the resistivity
two resistors of resistance r are connected in parallel the combination is connected in series to a resistor of
n identical resistors are connected in series the resistance of one of them is equal to r what is the equivalent
a group of particles is traveling in a magnetic field of unknown magnitude and direction you observe that a proton
consider a tennis ball cannon people use to practice their gamea estimate the velocity of the ball shot out of these
a laser beam is traveling through an unknown substance when it encounters a boundary with air the angle of reflection
a copper sheet with length 177 m width 0587 m and thickness 127 mm is oriented so that its largest surface area is
a circular wire loop of radius 141 cm carries a current of 251 a it is placed so that the normal to its plane makes an
when a beam of atoms emerges from an oven at the absolute temperature t the most probable de broglie wavelength for a
a mass spectrometer is used to examine the isotopes of uranium ions in the beam emerge from the velocity selector at a
a 4m long wire with thickness 5mm carries a current 04 a a second identical wire of equal length and thickness is
a technician wraps wire around a tube of length 33 cm having a diameter of 81 cm when the windings are evenly spread