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a diffraction grating with 220 lines per mm is used in an experiment to study the visible spectrum of a gas discharge
you throw a 250 n rock into the air from ground level and observe that when it is 140 m high it is traveling upward at
300 v are applied to a motor with a windings resistance of 650 ohms at the maximum motor speed the back emf is 155 va
a lawn mower has a flat rod-shaped steel blade that rotates about its center the mass of the blade is 0575 kg and its
the moment of inertia of a 0910 kg bicycle wheel rotating about its center is 0123 kgm2 what is the radius of this
an object is located 214 cm to the left of a diverging lens having a focal lengthnbsp f -342 cma determine the
an egg is thrown nearly vertically upward from a point near the cornice of a tall building it just misses the cornice
a rocket carrying a satellite is accelerating straight up from the earths surface at 110 s after liftoff the rocket
the distance between the objective and eyepiece lenses in a microscope is 20 cm the objective lens has a focal length
a 30-v battery with an internal resistance of 25 omega is connected to a lightbulb of a resistance of 60 omega what is
a proton and an electron have the same kinetic energy upon entering a region of constant magnetic field what is the
what is the velocity of a beam of electrons that go undeflected when passing through perpendicular electric and
the aluminum cable of a high-voltage transmission line carries a current of 600 a the cable is 60 km long and it has a
if a point charge is located at the center of a cube and the electric flux through one face of the cube is 50nm2c what
an ideal monatomic gas is the working substance of a carnot engine during the isothermal expansion the volume doubles
water vapor at 10 mpa 600 c enters a turbine operating at steady state with a volumetric flow rate of 36 m3 and exits
a certain resistor has a resistance of 1484 ohms at 200 degrees celsius and a resistance of 1512 ohms at 340 degrees
a body that has a mass of 1 kg and is moving 2 msec has an inelastic collision with a body that has a mass of 100 kg
according to a crude model the 11b nucleus is a uniform solid sphere of mass 18310-26 kg and radius 26710-15 m which
mechanical work is defined as a scalar product between the applied force f and the displacement vector d of the motion
two narrow slits are illuminated by a laser with a wavelength of 560 nm the interference pattern on a screen located x
a skater of mass 745 kg initially moves in a straight line at a speed of 480 ms the skater approaches a child of mass
your teacher tosses a basketball the ball gets through the hoop lucky shot the ball is thrown from an initial hieght of
a train is rounding a circular curve whose radius is 200 102 m at one instant the train has an angular acceleration of
a bullet of mass 0002 kg moving at 421 ms impacts a large fixed block of wood and travels 61 cm before coming to rest