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a person in a boat sees a sh in the water of index 133 at an angle of 54 degrees relative to the waters surfacewhat is
a certain circuit consists of an inductor of 50 mh in series with a resistor of 180 at one moment the current in the
the work function of tungsten is 450 ev calculate the speed of the fastest electrons ejected from a tungsten surface
the wavelength associated with the cutoff frequency for silver is 325 nm find the maximum kinetic energy of electrons
a 50 kg scientific instrument an air sampler is tied to a weather balloon by a rope if the upward acceleration of the
an object is located 130 cm in front of a convex mirror the image being 700 cm behind the mirror a second object twice
a skater initially turning at 36 revsec slows down and stops in 42 secondsa what is her angular decelerationb how many
a star with the same mass and diameter as the sun rotates around a central axis with a period of 288 days suppose that
after falling from rest from a height of 260 m a 11 kg ball rebounds upward reaching a height of 160 m if the contact
a lighted candle is placed 37 cm in front of a diverging lens the light passes through the diverging lens and on to a
an athlete needs to lose weight and decides to do it by pumping irona how many times must an 850 kg weight be lifted a
in a single-slit experiment light of wavelength 500 nm is used to produce a diffraction pattern on a screen 40 m away
two towboats are pulling a plane in the hudson river towboat 1 pulls with a force v1 6100n at an angle of 1 410o
a mad doctor believes that baldness can be cured by warming the scalp with sound waves his patients sit underneath the
a friend of yours is loudly singing a single note at 380hz while racing toward you at 265ms on a day when the speed of
a 160-m-long string is under 220n of tension a pulse travels the length of the string in 520ms what is the mass of the
two narrow slits are illuminated by a laser with a wavelength of 549nm the interference pattern on a screen located x
what is the magnifying power of an astronomical telescope using a reflecting mirror whose radius of curvature is 409m
a simple magnifier of refractive power 150 d is used to observe a beetle on a students desk if the image of the beetle
a small motor is mounted on the axis of a space probe with its rotor the rotating part of the motor parallel to the
a car backs out of a driveway in front of a fire truck the driver of the fire truck takes 018s to hit the brakes the
you have a telescope that has an objective lens with a diameter of 600 mm and has a focal length of 1500cma what
ocean waves of wavelength 100 m have a speed of 620 ms ocean waves of wavelength 200 m have a speed of 280 ms suppose
an object is placed 180 cm in front of a converging lens with a focal length of 600 cma determine the image location
electrons accelerated by a potential difference of 1286 v pass through a gas of hydrogen atoms at room