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A 50 ball of clay traveling east at 1.5 collides and sticks together with a 50 ball of clay traveling north at 3.0. What is the speed from the resulting ball of clay (using two significant figures)?
A copper bar is moved to the right while its axis is maintained in a direction that is perpendicular to a magnetic field. what is the direction of the magnetic field
Zinc has a work function of 4.30eV. What is the longest wavelength of light that will release an electron from a zinc surface, What is the maximum possible speed of the electron
In the troposphere, the part of the atmosphere that extends from the surface to an altitude of about 11 km, calculate the pressure p at height y=8863m
a star of mass 2.0 x 1031 kg that is 4.4 x 1020 m from the center of a galaxy revolves around that center once every
High-speed stroboscopic photographs show that the head of a 170-g golf club is traveling at 47 m/s just before it strikes a 46-g golf ball at rest on a tee, Find the speed of the golf ball just after impact
A football is thrown with an initial upward velocity component of 12.5m/s and a horizontal velocity component of 17.0m/s. How high does it get above the ground
A flat circle of radius 20 cm is placed in a uniform electric field of magnitude 6.6×102N/C, What is the electric flux through the circle when its face is at 30 to the field lines
Unpolarized light of intensity I0 is incident on three polarizing filters. The axis of the first is vertical, that of the second is 36° from vertical, What light intensity emerges from the third filter
a nonconducting solid sphere of radius 2.9 cm carries a uniformly distributed positive charge of 8.6 x10-9 coulombs. a
You are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the empire state building. Before the state legislature votes on funding for the project.
Jane is standing on the platform waiting for the train. The train approaching the platform from the north at 20 m/s blows its whistle when it is 100 m away from Jane. What frequency of sound does Jane hear
a 500 n man is riding in an elevator. at a certain instant his feet push against the floor with a force greater than
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