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an astronomical telescope hasa unlimited magnificationb two lenses of the same focal lengthc an objective of relatively
a 44 kg block is pushed 66 m up a rough 35deg inclined plane by a horizontal force of 74 n if the initial speed of the
a playground merry-go-round has a radius of 420 and a moment of inertia of 255 and turns with negligible friction about
a horizontal pipe narrows from a radius of 250 m to 100m if the speed of the water in the pipe is 100 ms in the
a container has a large cylindrical lower part with a long thin cylindrical neck the lower part of the container holds
the hydrogen spectrum has a red line at 656 nm and a violet line at 434 nm what angular separation between two spectral
light from an argon laser strikes a diffraction grating that has 5365 grooves per centimeter the central and
a pair of slits separated by 0160 mm is illuminated by light having a wavelength of 554 nm an interference pattern is
a rocket is fired in deep space where gravity is negligible in the first second it ejects 1160 of its mass as exhaust
a block of mass undergoes a one-dimensional elastic collision with a block of mass initially at rest if both blocks
two slits separated by 00530 mm and located 110 m from a viewing screen are illuminated with monochromatic light the
a beam of light of wavelength 482 nm passes through two closely spaced glass plates as shown in the figure below for
a loop is pulled with a force f to the right to maintain a constant speed of 80 ms the loop has a length of 015 m a
a transparent oil with index of refraction 119 spills on the surface of water index of refraction 133 producing a
a coating is applied to a lens to minimize reflections the index of refraction of the coating is 150 and that of the
a thin rod of length 089 m and mass 110 g is suspended freely from one end it is pulled to one side and then allowed to
an optometrist has a choice to give a patient either regular glasses or contact lenses to correct nearsightedness
a ball of mass m08kg is tied to the end of a string of length l02m and released when the string is held horizontally
a rifle with a mass of 25 kg fires a bullet with a mass of 55 g 00055 kg the bullet moves with a muzzle velocity of 330
a fullback with a mass of 75 kg and a velocity of 40 ms due west collides head-on with a defensive back with a mass of
a ball traveling with an initial momentum of 35 kgmiddotms bounces off a wall and comes back in the opposite direction
an average force of 270 n acts for a time interval of 004 s on a golf balla what is the magnitude of the impulse acting
big yellow fish swimming at 20ms swallows little green fish at rest big yellow fish is 3 times as massive as little
a 60 kg barrel is lifted 20 m in the air using a pulley system with a mechanical advantage of 3 a person only needs to
520-n uniform rectangular sign 400 m wide and 300 m high is suspended from a horizontal 600-m-long uniform 150-n rod as