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A torque accelerates a 10 kilogram solid disk (0.50 m radius) from rest to an angular speed of 3.0 radius/sec about an axis through its center n 2.0 revolutions. What is the torque?
A helium-neon laser of the type often found in physics laboratories has a beam power of 4.00 mW at a wavelength of 633 nm. Calculate the intensity of the focused beam
q1. while a roofer is working on a roof that slants at 39.0 degrees above the horizontal he accidentally nudges his
A particle travels horizontally between two parallel walls separated by 18.4 m. It moves toward the opposing wall at a constant rate of 7.7 m/s. What will be its speed when it hits the opposing wall
an airplane with a speed of 45 ms is climbing upward at an angle of 46deg with respect to the horizontal. when the
The wings of some beetles have closely spaced parallel lines of melanin, causing the wing to act as a reflection grating. what is the first-order diffraction angle for green light
a 15nc charge is located at xy 0cm15cm and a -7.0nc charge is located xy 7.0cm0cm. where would a -15nc charge need to
A solid-state device in a hand-calculator display has 3 x 10-2 coulombs of charge pass through it in 10 seconds. Find the current used by the calculator in milliamperes
A father racing his son has two-fifths the kinetic energy of the son, who has half the mass of the father. Find what is the original speed of the son
After flying for 15 minute in a wind blowing 42 km/h at an angle of 26 degree south of east, Find the speed of the airplane relative to the air
A 3.0 kg mass is attached to a vertical spring hanging from the ceiling. The spring and mass are stationary. The spring constant for the spring is 250 N/m. What is the gravitational potential energy of the system
A 1328 kilogram car moving at 19.1 meter per second in the +x direction hits from behind a second car moving at 13 meter per second in the same direction. obtain the velocity of the first car after this sudden collision
A small object of mass 0.0150kg & a charge of 3.1 uC hangs fromthe ceiling by a thread. A second small object, with a charge of4.2 uC, is placed 1.2m vertically below the first charge. Find a) the electric field at the position of the upper charge..
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