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a compound microscope has a barrel whose length is 183 cm and an eyepiece whose focal length is 12 cm the viewer has a
the potential difference between two parallel conducting plates in vacuum is 475 v an alpha particle with mass of
a very straight line of charge runs through the axis of a very long thin cylindrical shell of 2 cm radius the shell is
a bullet of mass mb is fired horizontally with speed v1 at a wooden block of mass mw resting on a frictionless table
an ice skater rotating 385 rads with arms extended has a moment of inertia of 231 kgm2 if the arms are pulled in so the
an uncharged nonconductive hollow sphere of radius 120 cm surrounds a 140 microc charge located at the origin of a
consider a closed triangular box resting within a horizontal electric field of magnitude e 824 104 nca calculate the
a capacitor is connected across the terminals of an ac generator that has a frequency of 430 hz and supplies a voltage
the earths nearly circular orbit around the sun has a diameter of 300 million km assuming it takes 365 days for the
a 7kg squirrel walks to the end of a 15 kg board resting on two saw horses when the squirrel is at the 1m position away
an arrow is shot at an angle of theta45 above the horizontal the arrow hits a tree a horizontal distance d220m away at
a baseball is thrown from the roof of 231 -tall building with an initial velocity of magnitude 115 and directed at an
the drawing shows a side view of a swimming pool the pressure at the surface of the water is atmospheric pressure the
two children fighting over a 20-kg toy pull on the toy in different directions one child pulls to the north with a
consider a star of mass m10msun composed entirely of fully ionized c-12 its core temperature is 6108k suppose the star
consider a star of mass m10msun composed entirely of fully ionized c-12 its core temperature is 6108k a what is the
a wheel free to rotate about its axis that is not frictionless is initially at rest a constant external torque of 59
assume that the reservoir is 200m deep held back by the dam wall a small horizontal pipe at the base of the dam
three identical masses of 800 each are placed on the x axis one mass is at -110 one is at the origin and one is at
as shown in the figure below a light string that does not stretch changes from horizontal to vertical as it passes over
what is the velocity of a beam of electrons that go undeflected when passing through perpendicular electric and
telescopes can be networked together to give an apparent aperature equal to their separation telescopes on either side
explain the physical processes by which astronomers are able to estimate the temperature of a gas by observing which