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a 35 mm camera has an adjustable aperture size of the opening over the lens this aperture size is labeled as the f-stop
a 5 oz baseball is thrown in the air so that when it is at its highest point it is traveling sideways at 500 ftsec if
a string provides a horizontal force which acts on a 500 n rectangular block at top right-hand corner as shownthe
the take-up reel of a cassette tape has an average radius of 14 cm find the length of tape in meters that passes around
a 1500 kg car has a speed of 35 ms if it takes 7 s to stop the car what is the impulse and the average force acting on
two identical uniform bricks of length 26 m are stacked over the edge of a horizontal surface what maximum overhang is
inside a sealed wooden box of mass m there hangs by a thread of negligible mass a lead pellet also of mass m at some
two astronauts are at rest in outer space one 197 m from the space shuttle and the other 394 m from the shuttle using a
a tuning fork vibrating at 513 hz falls from rest and accelerates at 980 ms2 how far below the point of release is the
a 129-f capacitor a 221-k resistor a switch and a 250-v battery are connected in series what is the rate of change of
suppose the wheel is rotated at a constant rate so that the mass has an upward speed of 467 ms when it reaches a point
suppose that charges on a dipole antenna oscillate slowly at a rate of 1 cycles and the antenna radiates
the second orbit for the only electron in a he ion has a radius of 529 x 10-11 m what is the speed of an electron in
use the gibbs-duhem relation to solve the following problem a gas has n 1025 particles contained in a cubic meter at
two particles of equal but unknown charge are held 45 cm apart if their electrostatic repulsion is 22 x 105 newtons
two equal but oppositely-charged particles are placed 100 m away from each other if the magnitude of the electric field
a 27 cm long solenoid 18 cm in diameter is to produce a 028 t magnetic field at its center if the maximum current is 57
the magnetic field perpendicular to a single 137 cm diameter circular loop of copper wire decreases uniformly from 0600
an ac power generator produces 50a rms at 3600v the voltage is stepped up to 100000v by an ideal transformer and the
a a resistor and capacitor are connected in series with an applied ac voltage source separate voltmeter readings across
a an ac voltage source with a peak output of 200v is connected to a 50 ohm resistor what is the rate of energy
calculate the mass of a solid gold rectangular bar that has dimensions lwh 420 cm 120 cm 290 cm the density of gold is
magnetic measurements have been made on some lavas found at 60n 90w the angle of inclination is measured to be 37 if
a solenoid 100 cm in diameter and 658 cm long is made from copper wire of diameter 0100 cm with very thin insulation
an green hoop with mass mh 28 kg and radius rh 017 m hangs from a string that goes over a blue solid disk pulley with