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A square metal plate 0.180 m on each side is pivoted about an axis through point O at its center and perpendicular to the plate. Calculate the net torque about this axis due to the three forces shown in the figure if the magnitudes of the forces are 1 = 18.0 N, 2 = 26.0 N, and 3 = 16.0 N.
A point source of light is 200 cm below the surface of a body of water. Find out the diameter of the circle at the surface through which light emerges from the water.
You swing a 2.60 kg stone in a circle, using the full length of a thin 60.0 cm rope. At what speed must you swing it so its acceleration will be 9.8 m/s^2.
A railroad hopper car has a mass of 50000 kg when empty and contains 50000 kg of coal. How fast does the car travel after all the coal is dumped
Explain in your own words the meaning of acute and chronic exposure, deterministic and stochastic effects from radiation. Give examples
Over a time interval of 2.16 years, the velocity of a planet orbiting a distant star reverses direction, Find the total change in the planet's velocity in m/s
A 15-g sample of the candy is placed in a small aluminum container of mass 0.325 kg filled with oxygen. Determine the Calorie content of 69g of candy
A zoom lens has a focal length that varies from 30 to 200 mm. Which setting will make the subject look the largest Which setting will include the widest angle of field
Calculate the speed of sound for a wave whose wavelength is 2.5 m and whose frequency is 270 Hz
he moon's diameter is 3.48 x 106 m, and its mean distance from the earth is 3.85 x 108 m. Find the diameter of the moon's image on the slide film
Two polarizers are oriented at 22.0? to one another. Light polarized at a 11.0? angle to each polarizer passes through both
Identifcal 2.0uC charges are placed on the vertices of a square with sides that are 2.0m in length. Determine the electric potential at the center of the square
A 52.0 kg mass attached to a spring oscillates with an amplitude of 2.25 m. The total mechanical energy of the system is 410 J. Find the position of the mass
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