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a gas is compressed at a constant pressure of 0800 at m from 900 l to 100 l in the process 380 j of energy leaves the
a lens having a focal length of 30 cm is used as a simple magnifiera what is the angular magnification obtained when
a glass windowpane in a home is 062 cm thick and has dimensions of 11 m multiplied by 16 m on a certain day the indoor
compute the temperature at which a tungsten filament that has an emissivity of 035 and a surface area of 30 10-5 m2
a train starts from rest and accelerates uniformly until it has traveled 32 km and obtained a velocity of 22 ms the
the head of a 10 kg hammer moving at 36 ms strikes a nail and drives it into hardwooda the head stays in contact 20 ms
a common flashlight bulb is rated at 0300 a and 270 v the values of the current and voltage under operating conditions
1 a in a piston is locked in place and the cylinder is placed in a boiling water the temperature pressure internal
tobogganed coasts down a hill and then goes over a slight rise by speed 15 ms the top of this rise can be taken to be a
1 a cylindrical resistor of radius 49 mm and length 19 cm is made of material that has a resistivity of350times10-5
a ball is thrown straight up from the edge of the roof of a building a second ball is dropped from the roof a time of
the cylinder by piston locked in place is immersed in a mixture of ice and water and allowed to come to thermal
a boat crosses a river of width 963m in which the current has a uniform speed of 182 ms the pilot maintains a bearing
a small but measurable current of 15 x 10-10 a exists in a copper wire whose diameter is 27 mm the number of charge
a rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below if the plane is
a 0180 kg potato is tied to a string with length 260 m and the other end of the string is tied to a rigid support the
a simple pendulum of length 20 cm and mass 50 g is suspended in a race car travelling by a constant speed 70 ms around
a 460-m-wide river has a uniform flow speed of 21 ms during a jungle and toward the eastnbsp an explorer wishes to
060 kg of ice at -10oc is placed in 030 kg of water at50oc how much liquid water is there when the system reaches
a locomotive is pulling 13 freight cars each of which is loaded by roughly the same weight the mass of each can be
a 580 kg girl weighs herself by standing on a scale in an elevatora what is the force exerted with the scale when the
a 200kg block is at rest on a horizontal table the coefficient of kinetic and static friction among the table and the
an explosion breaks an object into two pieces one of which has 240 times the mass of the other if 7100 j were released
professor johnsonrsquos glasses have a front radius of 012m and a back radius of -008m what is the focal length of his
a telescope has a two ft mirror how far apart in angle can the instrument distinguish two individual stars for blue 420