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a loaded freight car has 5 times as much mass as an empty freightcar if the loaded car coasts at 20 ms and collides
a 10-kg bowling ball moving at 40 ms bounces off a spring atabout the same speed that it had before bouncing what is
a technician wearing a brass bracelet enclosing area000500 m2 places her hand in a solenoid whose magneticfield is 290
a swimmer in a relay race has a 050 s lead and is swimming at aconstant speed of 4 ms the swimmerr has 50m to swim
cosmonaut andrei your co-worker at the international spacestation tosses a banana at you at a speed of 17 ms at exactly
you are driving a car at the 25-mih speed limit when you observethe light at the intersection 70 m infront of you turn
electronic devices are usually enclosed in metal boxes onefunction of the box is to shield the inside components
a flight attendant pulls her 74 n flight bag a distanceof 318 m along a levelairport floor at a constant velocity the
what is the average distance between nitrogen molecules at atemperature of 04 deg c and a pressure of 005
a student standing on the ground throws a ball straight up theball leaves the students hand with a speed of 833 ms when
a 42 kg copper penny drops a distance of 513m to the ground if 650 percent of the potential energy goes into increasing
a constant horizontal force moves a 50 kg trunk 30 m up a 29deg incline at constant speed the coefficient ofkinetic
what equation do you use to find a magnetic field strength b that is required to hold an electron in an orbit of radius
a compound microscope has an objective with a focal length of 300mm and an eyepiece of focal length 600 cm if the two
if the period of oscillation of an astronaut on a 3000-nmspring is 10 s what is the astronauts masstwo equal masses
an outfielder throws a baseball with an initial speed of868 mih just before an infieldercatches the ball at the same
a person is designing a 10x telescope if the telescope is limitedto a length of 20 cm what is the approximate focal
an astronaut on the moon places a package on a scale and findsits weigh to be 31 na what would the weight of the
three point charges q q -q are placed at the corners ofan equilateral triangle no other charged objects arenearby the
a uniform diving board of length is 50 m and mass 55 kg issupported at two points one support is located 34 m from the
a house painter is standing on a uniform horizontal platform thatis held in equilibrium by two cables attached to
a coiled telephone cord forms a spiral with 98 turns a diameter of 130 cm and an unstretchedlength of 600 cm determine
a stone used to grind wheat into flour is turned through 12revolutions by a constant force of 200 n applied to the rim
a box slides down a 30 degree ramp with an acceleration of 120 metersec squared determine the coefficient of kinetic
an alpha particle q 2e m 400 utravels in a circular path of radius 488 cm in a uniform magneticfield with b 100 t