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you are standing between two plane mirrors that are parallel to each other you are 2m from the mirror on your left and
suppose you wanted to be able to see small details on the moon using an optical telescope what is the smallest diameter
an image of the moon is focused onto a screen using a converging lens of focal length f 358 cm the diameter of the moon
a flywheel has a constant angular deceleration of -299 rads2a find the angle through which the flywheel turns as it
a current-carrying gold wire has a diameter of 086 mm the electric field in the wire is 049 vm what is the current
a child and a sled with a combined mass of 500 kg slide down a frictionless slope if the sled starts from rest and has
a compound microscope has a barrel whose length is 150 cm and an eyepiece whose focal length is 15 cm the viewer has a
a hollow sphere has a mass of m 800 kg and a radius of r 600 cm determine the spheres rotational inertia about an
an object is shot horizontally with an initial speed of vo meters per second if it can fall a vertical distance h
a 070 kg iron horseshoe is taken from a forge at 900degc and dropped into 300 kg of water at 130degc assuming that no
a particular heat engine has a useful power output of 440 kw and an efficiency of 300 the engine expels 7200 j of
a 755-loop square armature coil with a side of 85 cm rotates at 650 revs in a uniform magnetic field of strength 075 t
a special kind of light bulb emits monochromatic light of wavelength 652 nm electrical energy is supplied to it at the
water is supplied to an office building 240 m high through a pipe at ground levela find the minimum pressure in the
what is the potential at the center of a square with point charges 1 2 2 3 arranged at its corners and side length s
1 what is the rotational analog to newtons second law fma2 a point mass is rotating about a rotation axis you increase
a hair dryer is rated at 1700 w when connected to a 120 v source find the resistance of the hair dryer as well as the
a circuit containing a 76 h inductor has an alternating current supplied to it if irms is 56 a and vp is 28 v find the
an object with moment of inertia i1 is rotating freely with no torque applied with angular velocity w another object of
the density of ice is 917 kgm3 and the density of sea water is 1025 kgm3 a swimming polar bear climbs onto a piece of
light propagating in the glass n1 165 wall of an aquarium tank strikes the interior edge of the wall with incidence
suppose that when a certain sound intensity level in db triples the sound intensity in wm2 quadruples determine this
a 24-kg boy stands 5 m from the center of a frictionless playground merry-go-round which has a moment of inertia of 234
the team monitoring a space probe exploring the outer solar system finds that radio transmissions from the probe take
imagine trying to build a portion of a draw bridge as in the following the side towers reach h100 meters high above the