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A 1 200-N uniform boom at f 5 65° to the horizon- tal is supported by a cable at an angle u 5 25.0° to the horizontal as shown in Figure P8.28. The boom is pivoted at the bottom, and an object of weight w 5 2 000 N hangs from its top. Find
(a) the tension in the support cable and
(b) the components of the reac- tion force exerted by the pivot on the boom.
Old naval ships fired 13 kg cannon balls from a 210 kg cannon. It was very important to stop the recoil of the cannon, since otherwise the heavy cannon would go careening across the deck of the ship.
A hydrogen atom is moving at a speed of 125.0 m/s. It absorbs a photon of wavelength 97 nm that is moving in the opposite direction. By how much does the speed of the atom change
Light of wavelength 500 nm illuminates a round 0.50-mm-diameter hole. find the width of the central bright circle on the screen
Rays of the Sun are seen to make a 35.6 angle to the vertical beneath the water. At what angle above the horizon is the Sun
Two sinusoidal waves of the same frequency travel in the same direction along a string. what is the amplitude (in cm) of the resultant wave
Two circular disks spaced 0.50 mm apart form a parallel-plate capacitor. What are the diameters of the disks
A mass m = 6.100kg is suspended from a string of length L = 1.310m. What is the angle theta between the string and the vertical
A 3.2-kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. What is the elastic potential energy of the system when the 3.2-kg block is replaced by a 4.1-kg block
(a) What is the light intensity on a wall 3.0 m away from the lightbulb. (b) Where did the 96 W go. (c) A krypton laser produces a cylindrical red laser beam 3.0 mm in diameter with 4.0 W of power.
A wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.11 m2 and whose thickness is 3 mm. what is the percentage lost by the window
A football is kicked at ground level with a speed of 40.0 m/s at an angle of 35.0° to the horizontal. How much later does it hit the ground
A moving particle encounters an external electric field that decreases its kinetic energy from 9710 eV to 8150 eV as the particle moves from position A to position B. Determine the charge of the particle
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