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consider the isothermal expansion of 450 mol of an ideal gas at 450 k from an initial pressure of 120 bar to a final
a playground merry-go-round made in the shape of a solid disk hasa diameter of 250 m and a mass of 3500 kg two children
solid argon has a density of 1650 kgm cubed the atomic weight of argon is 40 assuming each atom occupies a cubical
a 50 g ball is released from rest 10 m above the bottom of the track shown in the figure it rolls down a straight 30
a bat moving at 23 ms is chasing a flying insect the bat emits a 51 khz chirp and receives back an echo at 5133 khz at
william tell must split the apple atop his sons head from a distance of 20 when william aims directly at the apple the
a child sitting 120 from the center of a merry-go-round moves with a speed of 165 calculate the centripetal
the average atmostpheric pressure po on the surface of mars is 60hpa the radius of the planet is r 3400 km the
a wagon is rolling forward on level ground friction is negligible the person sitting in the wagon is holding a rock the
an 118 kg block of metal is suspended from a scale and immersed in water as in the figure below the dimensions of the
within a typical thunder cloud there are electric charges of -40 c and 40 c separated by a vertical distance of 5 km
a baseball pitcher throws a baseball with a speed of 47 in throwing the baseball the pitcher accelerates the ball
the piezoelectric transducers of the ultrasound machine generatefrequencies of 74 mhz and 105 mhz assuming that one
consider the arrangement of 2 point masses m and 3m with the value m 200 kg connected by a massless rod of l 800 m
the pilot of an airplane traveling 190 wants to drop supplies to flood victims isolated on a patch of land 160 belowthe
a rotating rod that is 153 cm long is spun with its axisthrough one end of the rod so that the other end of the rod has
a sailor strikes the side of his ship just below the waterline he hears the echo of the sound reflected from the ocean
the archerfish hunts by dislodging an unsuspecting insect fromits resting place with a stream of water expelled from
a block of mass m 08 kg hangs at the end of a massless spring a smaller block of mass m 03 kg is glued to the bottom
if a violin string vibrates at 400 as its fundamental frequency what are the frequencies of the first four
three metal fishing weights each with a mass of 100x102 g and at temperature of 100oc are placedin 100x102g of water at
yellow light propagates through vacuum at a speed of 3 x 105 kmsec with a wavelength of 590 nm in water however the
the filament in a light bulb has a resistance of 10 if the filament has a cross sectional area of 30times10-6 m2 and
a capacitor has a capacitance of 55pf in the charging process electrons are removed from one plate and placed on the
a charge of 4microc is placed at one corner of an equilateral triangle and a charge of -2microc at another corner the