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a laser beam is traveling through an unknown substance when it encounters a boundary with air the angle of reflection
the right-side rearview mirror of mikes car says that objects in the mirror are closer than they appear mike decides to
an open-open organ pipe is 842 cm long an open-closed pipe has a fundamental frequency equal to the third harmonic of
a guitar string with a linear density of 20 gm is stretched between supports that are 60 cm apart the string is
the volume of an ideal gas is increased from 1 m3 to 2 m3 while maintaining a constant pressure of 1000 pa 1 pa 1 nm2a
a nail gun fires a nail into a piece of wood the nail is going a velocity of 90 ms right before entering the wood the
a 1967 kennedy half-dollar has a mass of 1150 x 10-2 kg the coin is a mixture of silver and copper and in water weighs
if the rms electric field of this light is 160nc at a distance of 130m from the bulb what is the average total power
a 1n apple which is 5 m from the ground breaks from its stem and falls to the ground when it has fallen a distance of 2
a 46 gram golf ball is hit and launched at 1944 kmhr at 30 degrees above the horizontal with no air-resistance the ball
the bunker hill monument is a 67 m tall granite obelisk that contains 294 steps if it takes a 735n person 15 minutes to
at canobie lake park nh the starblaster ride launches riders straight up into the air with a launch speed of 30 ms and
at water-country nh there is a ride called the double geronimo which is described as an extreme body slide this water
an amazing parent pushes their childs sled total mass 65kg so that the sled is moving at 5 ms at the top at the
at 2432 m above sea level mount olympus in utah is the highest peak in olympic nantional park lets say that the greek
if the diameter of the fifth circular orbit of the hydrogen atom is 265 a what is the frequency of the
a wire with initial length l0 and radius r0 has measured resistance of 10 ohms the wire is drawn under tensile stress
two parallel wires 10 cm apart carry currents of 18 aa what is the magnitude of the magnetic field at the a point
a model of a red blood cell portrays the cell as a spherical capacitor a positively charged liquid sphere of surface
a laser of 750 nm is shown through a grating having 5000 lines per cm what is the angle to the first order
two rockets are approaching each other on a head on collision course each is moving at velocity 08 relative to an
a beam of unpolarized light at wavelength 550 nm is incident normally on the face of a sapphire al2o3 crystal which
a diverging lens with f -260 cm is placed 110 cm behind a converging lens with f 200 cm where will an object at
which of the following is not a valid criterion for the acceptance of a physical law or theory agreement with past
light of wavelength 580 nm passes through a pair of slits that are 11 microm wide and 215 microm aparthow many bright