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a heat pump has a coefficient of performance of 375 and operates with a power consumption of 693 103 wa how much energy
a shell is fired with a horizontal velocity in the positive x direction from the top of an 80 m high cliff the shell
a landing airplane makes contact with the runway with a speed of 40 ms and moves toward the south after 8 minutes the
a 2298 g ice cube at -945 oc is place in an aluminum cup whose initial temperature is 7996 oc the system comes to an
if you fill your tank with 41 of gasoline by how much does the cars mass
consider the following reaction where has a mass of 14003 074 u has a mass of 12000 000 u d has a mass of 2014 102 u
a block of mass m is attached to a spring ofspring constant k and is moving with constant speed in a horizontalcircle
a covex lens of focal length 10 cm placed 40 cm in front of aconcave lens of focal length 25 cma small object is placed
a transverse harmonic wave travels on a rope according to the following expression yxt 015sin22x 174t the mass
a 1000 kg car is pushed up a 175 degree incline for a distance of300 m at a constant speed assume the applied force is
two point charges are fixed on the y axis a negativepoint charge q1 -28microc at y1 025m and a positive point charge
water flows through a venturi meter with a pipe diameter of 90 cm and a constriction diameter of 56 cm the u-tube
a seagull flies at a speed of 10ms directly into the wind knowing that it takes the bird 25 min to travel 8km relative
a 1484-kg car is moving westward with a speed of 207 ms and a 2888-kg truck is traveling east with a speed of 159 ms
a speaker fixed to a moving platform moves toward a wall emitting a steady sound with a frequency of 225 hz a person
a person stands at a point 510m in front of the face of a sheer cliffnbsp if the person shouts how much time will
a steel cable with total length 20m and mass 100kg is connected to two polesnbsp the tension in the cable is 2000n and
a point charge of q is placed at the center of a square and asecond point charge of -q is placed at the upper-left
a point source of light illuminates an aperture 400 away a 170 -wide bright patch of light appears on a screen 200
a 10-c charge is 15 m from a second charge and the force betweenthem is 10 n what is the magnitude of the second
a tennis ball is thrown out a window 28m above the ground at an initial velocity of 150 ms and 20 degrees below the
a sled of mass 8 kg is on a frictionless slope inclined at 35degrees to the horizantalit is pulled by a rope that makes
consider a length of pipe in air take the velocity of sound in air to be 343 msa calculate the length for a pipe that
the fundamental frequency of an open pipe corresponds to middle e 3296 hz on the chromatic musical scale the third