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a man tries to determine the distance to an island offshore by using his knowledge of physics and wave motion he
a cannon ball is fired at an angle of 22 above horizontal with an initial speed v0 300 ms reaching a maximum height h
a batter hits a baseball straight upward at home plate and the ball is caught by the catcher 50 s after it is struck
a 60 skydiver can be modeled as a rectangular box with dimensions 21 41 18 part a what is his terminal speed if he
expand 1046 mole of an ideal monatomic gas initially at 526 kpa and 605 k from initial volume vi 100 m3 to final
a coil of wire is in the plane of the paper the north pole of a magnet is facing the coil what is the direction of the
an ideal monatomic gas initially has a temperature of 330 k and a pressure of 700 atm it is to expand from volume 530
a sphere of radius 0500 m temperature 255degc and emissivity 0873 is isolated in an environment of temperature 770degca
air that initially occupies 0144 m3 at a gauge pressure of 1311 kpa is expanded isothermally to a pressure of 1013 kpa
a long straight cylindrical wire conductor of radius r carries a current i of uniform current density in the conductora
ice has formed on a shallow pond and a steady state has been reached with the air above the ice at -41degc and the
an ideal solenoid has a field of magnitude 010 t when carrying a current of 200 a the solenoid is 50 m long what is the
the assembly made with massless strings attached to balls ball a m03kg is released from height 02m above ball b m05kg
a note on a piano has a frequency of 440 hz if the tension in the 050-m-long string is 485 n and one-half wavelength
an electron with a speed of 30x106ms moves into a uniform electric field of magnitude 10x103 nc the field lines are
a new car is crash tested by running it into a heavy barrier at 41 kmh the car has a mass of 1439 kg and takes 014 s to
if a persons food energy intake is 2400 kilocalories per day and if all this energy is given off as heat what is the
a person sitting on a stool rotating at a rate of 21 rpm holds masses in each hand when their arms are outstretched
a uniform 345-kg beam of length 495 m is supported by a vertical rope located d 120 m from its left end as in the
a particular wire has a diameter of 17 mm and length of 13 m if its resistance is 15 m what is the resistivity of the
a small 300 g cart is moving at 130 ms on an air track when it collides with a larger 400 kg cart at rest after the
one side of our asteroid is constantly illuminated by the sun while the other side remains in the dark do you expect
a small 128g plastic ball is tied to a very light 269cm string that is attached to the vertical wall of a room a
two small plastic spheres are given positive electrical charges when they are 180cm apart the repulsive force between