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violet light and red light travel through air and strike a block of plastic at the same angle of incidence the angle of
a pair of slits separated by 0170 mm is illuminated by light having a wavelength of 624 nm an interference pattern is
shown on the right is large block 170 cm wide 160 cm long and 2700 cm high of mass 255 kg this block is passing through
a concave mirror has a focal length of 287 cm the distance between an object and its image is 528 cm find a the object
a small statue has a height of 35 cm and is placed in front of a concave mirror the image of the statue is inverted 15
a 1200 kg ore cart is rolling at 108 ms across a flat surface a crane dumps 691 kg of ore vertically into the cart how
a small fly of mass 020 g is caught in a spiders web the web vibrates predominately with a frequency of 60 hz a what is
a 051 kg mass vibrates according to the equation x 043 cos 837t where x is in meters and t is in seconds a determine
a ladder is leaning against a vertical wall the coefficient of friction between the ladder and the horizontal surface
a 0075 kg arrow is fired horizontally the bowstring exerts an average force of 65 n on the arrow over a distance of 09
most of the motion generated by joints in the human body are examples of levers an example of a third class lever is
two identical small charged spheres hang in equilibrium with equal masses as shown in the figure the length of the
a given the speed of sound in air is 343ms the length of a hollow pipe is 632 cm the air column in the pipe is
starting from rest a basketball rolls from the top to the bottom of a hill reaching a translational speed of 51 ms
a positive object touches a neutral electroscope and the leaves separate then a negative object is brought near the
a 200-kg mass object traveling east at 200 ms collides with a 300-kg mass object traveling west at 100 ms after the
a 100kg hollow sphere is neutrally buoyant and completely underwater its volume is 05 cubic meters if this 05 cubic
a baseball approaches home plate at a speed of 410 ms moving horizontally just before being hit by a bat the batter
water starts moving at 10 meters per second at the top of the hill at a pressure of 1 atm it moves down a pipe and
a block with mass m 170 kg rests on a frictionless table and is accelerated by a spring with spring constant k 43040
the hydrogen atom consists of a proton of mass 16710-27kg and an orbiting electron of mass 91110-31kg in one of its
how do paramagnetic materials differ from diamagnetic materialsa they are the sameb paramagnetic molecules have a
a 5 kg block sits on an inclined plane with angle 30o a force is applied up the incline what is the magnitude of the
climate change impacts are measured by global warming potential gwp which is measured in units of carbon dioxide co2
a current is flowing through a circuit and you open a switch why might a spark jump across the switch opening explain