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A bicycle and rider going 15 m/s approach a hill. Their total mass is 91 kg.
(a) What is their kinetic energy?
(b) If the rider coasts up the hill without pedaling, how high above its starting level will the bicycle be when it finally rolls to a stop?
A uniform bar of length l is fixed at one end and free at the other end. Show that the frequencies of normal longitudinal vibrations are .
A uniform disk of mass 0.72 kg and radius 5.3 cm is mounted in the center of a 10 cm axle and spun at 717 rev/min. find the magnitude of the angular velocity of precession
A car traveling 85km/h slows down at a constant 0.46m/s2 just by "letting up on the gas." Calculate the distance the car coasts before it stops
An electron has a kinetic energy of 1.2 x 10-17 J. It moves on a circular path that is perpendicular to a uniformmagnetic field of magnitude 4.1 x 10-5 T. Determine the radius of the path.
Two blocks with different mass are attached to either end of a light rope that passes over a light, frictionless pulley that is suspended from the ceiling. what is the mass of each block
Captain Jean-Luc is piloting the USS Enterprise XXIII at constant speed v = 0.830 c. As the Enterprise passes the planet Vulcan, he notices that his watch and the Vulcan clock both read1:00 P.M. At 3:00 P.M., according to his watch, the Enterprise pa..
In a photoelectric effect experiment, no current flows unless thewavelength is less than 570nm. What is the work function of themetal?
A nearsighted person wears glasses to correct the problem. The lenses in the glasses have a focal length of -520 cm, How far from the eyes is the person's far point located
What is the fractional change in the period of the pendulum.
The wingspan of a 747 jetliner is 60 m. If the plane is flying(horizontally) at 900 km/h in aregion where the vertical component of Earth's magnetic fieldis 0.16 G, what emf develops between the plane's wingtips?
a 600 pf capacitor is charged by a 200 v supply. it is then disconnected from the supply and is connected to another
Two people stand 3 m in front of large plane mirror and space 5m a part in dark room at what angle of incidence should one of them shine a flashlight on the mirror so that reflected beam directly strickes the other person.
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