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what is the smallest thickness of a soap film n 136 that would appear black if illuminated by 470 nm light suppose
a box of 20 kg is pushed up a 15 degree frictionless incline plane at a uniform speed the applied force on the box is
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will rate lifesaverconsider the p fund n 5 series for hydrogena what is the wavelength of the series limit for the p
sketch of piston-spring systemsthe figure shows three identical chambers containing a piston and a spring with spring
a dentist causes the bit of a high-speed drill to accelerate from an angular speed of 159 x 104 rads to an angular
a baton twirler throws a spinning baton directly upward as it goes up and returns to the twirlers hand the baton turns
if a conducting sphere is to be charged to a potential of6100 v what is the smallest possible radius of the sphere such
four point charges each having a charge with a magnitude of 41 microc are at the corners of a square whose sides are 2
its from safety that a person mustnt be hit by an electromagnetic radiation by a high density more than10 mv
very fine smoke particles are suspended in air the translationalrms speed of a smoke particle is 26510-3 ms and the
objects with masses of 100 kg and a 400 kg are separated with 0340 ma find the net gravitational force exerted by these
a cork floating on a lake bobs up and down as a small wave passes the cork completes 400 cycles in 400 s the wave peaks
a truck is traveling around a level curve of radius 1042 m at an instantaneous speed of 204 ms the trucks speed is
a piece of copper wire is formed into a single circular loop of radius 9 cm a magnetic field is oriented parallel to
two campers carry their gear 907kg on a light rigid horizontal pole whose ends they support on their shoulders 183m
a diffraction grating of 3400 slits per centimetre is utilized to analyze the spectrum of mercurya discover the angular
a hydrogen atom is in the 3d energy state decide the following1 the principle quantum number and the energy of the
compute the debroglie wavelength and the orbital radius of an electron in the n 4 energy state of a hydrogen atom
assume that the value of n in a radioactive transition in hydrogen changes only with unity as is suggested by the
the attractive force between proton and an electron due to gravity is gmpme r2 where me 09x10-30 kg mp 167x10-27 kg
people immersed in strong unchanging magnetic fields occasionally report sensing a metallic taste some investigators
an air puck of mass 29kg is tied to a string and allowed to revolve in a circle of radius 14m on a frictionless
1 an object is placed 12 cm in front of a concave mirror the mirror forms a real inverted image that is the similar
a light ray is incident from air onto the surface of a very quiet lake if the angle of refraction is 26deg and the