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A uniform beam having a mass of 60 kg and a length of 2.8 m is held in place at its lower end by a pin. Its lower end is making an angle of 40 ? with the horizontal. Its upper end leans against a vertical frictionless wall as shown in the figure. What is the magnitude of the force the pin exerts on the beam? Hint: How large is the vertical component of the force from the vertical wall if the wall is frictionless?
a 15mw energy laser has a beam exit diameter of 2cm and beam divergence of 0.0002radians.anbspnbspcalculate the power
The balls have a glancing collision, not a head-on collision, deflecting the second ball by 90° and sending it north at 1.51 m/s. Illustrate what are the speed and direction of the first ball after the collision?
Find the magnetic force due to a long wire(8.9A) on a square coil (10A) of side 615cm the centre of which is at 10.1cm from the wire
A balloon is rubbed with a wool glove. The two items attract one another with a force of strength 0.6 N, How many electrons were transferred
The density of air at standard temperature and pressure (STP) is 1.20 kg/m^3 how much mass could this balloon carry
A person hums into the top of a well and finds that standing waves are established at frequencies of 10, 30, and 50 Hz. How deep is the well
A merry go round at a children's playground can be approximated as a uniform circular disc with a diameter of 3.72 m and a mass of 288 kg. A constant force of 178 N is applied perpendicular to the outer edge of the merrygoround. How long does it t..
A 550 -cm flask contains 0.450grams of a gas at a pressure of 140kPa, What is the molecular mass of this gas
A round pipe of varying diameter carries petroleum from a wellhead to a refinery. At the wellhead the pipe\'s diameter is 59.7 cm (0.597 m) and the flow speed of the petroleum is 10.7 m/s. what is the pipe\'s diameter at the refinery
A neutron star is the remnant left after certain supernovae (explosions of giant stars). What is a typical neutron star density
At a factory, a noon whistle is sounding with a frequency of 497 Hz. As a car traveling at 84km/h approaches the factory, driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the change i..
The mass of the nuclide 16/8 O is 15.994 915 u. Determine its average binding energy per nucleon
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