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a 047 kg piece of wood floats in water but is found to sink in alcohol specific gravity 079 in which it has an
a small circular hole 500 mm in diameter is cut in the side of a large water tank 130 m below the water level in the
water is flowing in a cylindrical pipe of varying circular cross-sectional area and at all points the water completely
at a point where an irrigation canal having a rectangular cross section is 189 m wide and 365 m deep the water flows at
an ore sample weighs 170 n in air when the sample is suspended by a light cord and totally immersed in water the
a hunter aims directly at a target on the same level 891 away if the bullet leaves the gun at a speed of 173 by how
a 300-kg block starts from rest at the top of a 270deg incline and slides 200 m down the incline in 120 sa find the
treating the siren as a point source of sound and ignoring reflections and absorption find the intensity level heard by
a small moon of a giant planet has an orbital period of 177 days and an orbital radius of 463 105 km from these data
a gas is allowed to expand at constant pressure until it reaches its final volume it is then cooled at constant volume
an astronaut with a steady heartbeat of 57 beats per minute travels at a constant speed of 091c relative to earth
a spherical balloon is made from a material whose mass is 300 kg the thickness of the material is negligible compared
what is the pressure at a depth of 5000 in the ocean what is the fractional volume change of seawater at this pressure
a block of wood mblock 52 kg rests on a horizontal surface for which the coefficient of kinetic friction is 032 a
after emptying her lungs a person inhales 424 l of air at 0 degc and holds her breath how much does the volume of the
a 32 m long pendulum is released from rest when the support string is at an angle of 23deg with the vertical what is
a bomb at rest at the origin of an xy-coordinate system explodes into three pieces just after the explosion one piece
a 800 box contains helium at a pressure of 150and a temperature of 110 it is placed in thermal contact with a 180 box
consider a heat engine that operates between thermal reservoirs at 450 k and 232 k suppose the engine does 4500 j of
an aluminum block slides along a horizontal surface the block has an initial speed of 94 ms and an initial temperature
a reversible heat engine operates between thermal reservoirs at 810 k and 180 k if 8280 j are extracted from the hot
a system consisting of an ideal gas at the constant pressure of 108 kpa gains 923 j of heat calculate the change in
a billiard ball of mass m 025 kg strikes the cushion of a billiard table at 1 58deg and a speed v1 30 ms it bounces
in a newtons ring experiment a plano- convex glass n 142 lens having diame- ter 118 cm is placed on a flat plate as in
a 106 watt motor is used to lift a 114 kg container to a height of 6 m how much time does it take to lift the container