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a steel beam is placed vertically in the basement of a building to keep the floor above from sagging the load on the
a bicycle wheel initially rotating at 3 rads the rotation increases to 7 rads within 6 seconds find the bicycle wheels
lasers have been used to suspend spherical glass beads in the earths gravitational fielda a black bead has radius r and
a rocket of mass 442 times 105 kg is in flight near earths surface its thrust is directed at an angle of 653 deg above
describe the similarities and the differences between the gravitational force between two objects and the electrostatic
the two stars in a certain binary star system move in circular orbits the first star alpha has an orbital speed of 360
what would be the angle of the first diffraction pattern for a 650 nm laser submerged in water n133 if the diffraction
a hockey puck b rests on a smooth surface of ice and is struck by a second puck a which was originally traveling at
a railroad car of mass 25 104 kg moving at 350 ms collides and couples with two coupled railroad cars each of the same
light from an argon laser strikes a diffraction grating that has 5330 grooves per centimeter the central and
on a distant planet golf is just as popular as it is on earth a golfer tees off and drives the ball 25 times as far as
an ideal gas at 246degc and a pressure 160 105 pa is in a container having a volume of 100 la determine the number of
suppose the temperature of 456 l of ideal gas drops from 359 k to 275 ka if the volume remains constant and the initial
an object whose rotational inertia is 100 kgm2 is subjected to a torque of 20 nma what is its rotational accelerationb
a cylinder contains 185 mol of helium gas at 185degc assume that the helium behaves like an ideal gasa find the total
a bug is hovering in the air v0 when a heavy automobile moving at 20 ms suddenly collides with it ig the collision is
a construction worker uses a steel tape to measure the length of an aluminum support column if the measured length is
an olympic long jumper leaves the ground at an angle of 198 deg and travels through the air for a horizontal distance
a hypothetical charged particle passes without deflection through crossed electric and magnetic fields of strengths
a line in the x-ray spectrum of gold has a wavelength of 185 pm185x1012 m the emitted x-ray photons corresponds to a
a proton orbits a long charged wire making12106revolutions per second the radius of the orbit is14cm what is the wires
an electron is released from rest15cm from an infinite charged plane it accelerates toward the plane and collides with
two circular disks spaced 050 mm apart form a parallel-plate capacitor transferring16109electrons from one disk to the
light from the sun arrives at the earth at the rate of about 1400 wm2 of area perpendicular to the direction of the
the work function for cesium 181 ev is much lower than the work function for other metalsa what is the photoelectric