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Two thin rods of length L are rotating with the similar angular speed ω (in rad/s) about axes that pass perpendicularly through one end. Rod A is mass less but has a particle of mass 0.66 kg attached to its free end. Rod B has a mass of 0.66 kg, which is distributed regularly along its length. The length of each rod is 0.77 m, and the angular speed is 5.7 rad/s. Discover the kinetic energies of rod A with its attached particle and of rod B.
If an electric wire is allowed to produce a magnetic field no larger than that of the Earth .45E-4 T at a distance of 27 cm
An upright object is placed a distance in front of a converging lens equal to twice the focal length (f1) of the lens. On the other side of the lens is a converging mirror of focal length f2 separated from the lens by a distance 2(f1+f2).
in a single slit experiment, the distance between two dark fringes of the second order is 10 cm on a screen which is 1.5 m away. find the width of the slit
A wrench is thrown at a speed of 69 mph at a wall that is 70 ft away. How much force does the wall exert on the wrench and in what direction
She wants glasses that will let her see objects at a distance of only 25 cm from her eyes. Examine the focal length of the glasses needed if the glasses are 2 cm and 3 cm from her eyes.
The drawing shows a 182-kg crate hanging from the end of a steel bar. The length of the bar is 0.08 m, and its cross-sectional area is 4.00 10-4 m2. Determine the shear stress on the bar
An object takes 2.20 s to fall 5.40 m on a certain planet. Find the acceleration due to gravity on the planet
An ideal, monatomic gas is allowed to expand quasi-statically and adiabatically from an initial volume Vi = 3.0 liter and initial temperature Ti = 360 K to a final volume of Vf = 8.2 liter. What is the change in the internal energy of the gas
A tennis player receives a shot with the ball (0.060 0 kg) traveling horizontally at 52.5 m/s and returns the shot with the ball traveling horizontally at 38.5 m/s in the opposite direction
In a model AC generator, a 499 turnrectangular coil 5.0 cm by 28 cm rotates at 115 rev/minin a uniform magnetic field of 0.62 T. What is the maximum emf induced in the coil?
Two point charges, q1 = 2.0 pC and q2 = -2.0 pC, are separated by 5.6 µm. What is the dipole moment of this pair of charges
A cell membrane is composed of lipid molecules and is approximately 18 nm thick, what is the approximate capacitance of a spherical cell that has a diameter of 20 m?
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