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A light rod L has a ball with mass m attached to its end, forming a simple pendulum. It is inverted so that the rod is straight up and then released. What are a) Its speed at the lowest point b) The tension in the suspension at that instant? c) The same pendulum is next put in the horizontal position and released from rest. At what angle from the vertical will the tension in the rod equal the weight in magnitude?
A viewing window in the Atlanta aquarium is 55 inches wide and 46 inches high. what is the outward force on the window
Two waves traveling on a string in the same direction both have a frequency of 236 Hz, a wavelength of 0.40 m, and an amplitude of 0.14 m. What is the phase difference between the two waves
A multicylinder gasoline engine in an airplane, operating at 2.35 103 rev/min, takes in energy 7.83 103 J and exhausts 4.57 103 J for each revolution of the crankshaft. What is the torque exerted by the crankshaft on the load?
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear
laser beam is incident at an angle of 28.4° to the vertical onto a solution of corn syrup in water. If the beam is refracted to 19.04° to the vertical, what is the index of refraction of the syrup solution
A canoe has the velocity of 0.420m/s southeast relative to the earth. The canoe is on a river that is flowing at 0.570m/s east relative to the earth.
A person with a digital camera uses a lens of focal length 15.0mm to take a photograph of the image of a 1.40cm -tall seedling located 9.80cm behind a double-convex lens of 17.0cm focal length
What is the magnitude and direction of the magnetic field
The electric potential difference across the cell membrane of a human cell is 0.080 V, with the higher potential being outside the cell. How much work must be done by the cell to eject the ion
A circular wire loop of radius 14.1 cm carries a current of 2.51 A. What is the magnitude of the torque acting on the loop
lady ate a whole medium size pizza storing up 120 food Calories. This energy is used to heat up 2 liters of water from a certain initial temperature to a final temperature of 80 deg.C, what was the initial temperature of the water?
A plank 2.00 cm thick and 15.1 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. find the shear modulus of the wood
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