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consider an electromagnetic made from a solenoid hooked to an emf source the current flowing through the solenoid is
the human eye is sensitive to orange light having a frequency of about 495 1014 hz a wavelength of about 608 nm what is
in exercising a weight lifter loses 0143 kg of water through evaporation the heat required to evaporate the water
a beam of particles is directed at a 0021-kg tumor there are 23 x 1010 particles per second reaching the tumor and the
a beam of neutrons with a de broglie 250 nm diffracts from a crystal from a crystal of table salt which has an
a large 50-turn circular loop of radius 10cm carries a current 4a at the center of the loop is a small 20-turn coil of
the speed of light in a particular type of glass is 169 108 ms what is the index of refraction of the
two masses m112 kg and m2 35 kg are held connected by a massless rope hung over a frictionless light pulley if the
the bones a a saber-toothed tiger are found to have an activity per gram of carbon that is 145 of what would be found
a 75kg passenger on a roller coaster travels through the bottom of a curve with a radius of 10m at a speed of 15 ms
a subway train has a sound intensity level of 90 db and a rock band has a sound intensity level of 110 db how many
waves moving on a lake have a speed of 28 ms and a distance of 16 m between adjacent crestsa what is the frequency of
the electron in a hydrogen atom is in a subshell with maximum angular momentum quantum number l6 what is the number of
during a day time football game you notice that a players reflective helmet forms an image of the sun 32 cm behind the
during the takeoff of an airplane a passenger removes his tie and lets it hang loosely from his fingers he observes
after leaving some presents under the tree santa notices his image in a shiny spherical ornament if santa knows the
a lens for a 35mm- camera has a focal length given by 40mmwhat is the magnification of the image on the
a neon sign utilizes a step-up transformer to run at 6000 v on the 120 v from the wall outlet if the primary coil has
an object on the ground is lunched at 100ms at an angle of 750 above the horizontal if the object lands on top of a
sam is taking his girlfriend sally out for a ride in his boat he starts out at rest he accelerates with an acceleration
a rocket powered sled accelerates uniformly from 12ms to 115ms while undergoing a straight line path displacement of
two point charges q1 40 c and q2 -80 c are placed along the x-axis at x1 0 m and x2 020 m respectively what is the
a wave is moving along a string the equation giving the displacement y of a point at coordinate x and at time t has the
a lens system consists of two lenses one is converging and the other is a diverging lens a screen is placed 32 cm to
two converging lenses are used in a particular device the first lens the one closest to the object has a focal length