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Light from a helium-neon laser (?=633nm) passes during a circular aperture and is observed on a screen 4.0m behind the aperture. The width of the central maximum is 2.5cm.
Determine what is the diameter (in mm) of the hole?
a 120 g copper calorimeter cup contains 220 cm3 of water and 35 g of ice all in thermal equilibrium. a 185 g piece of
A man with a mass of 100kg is standing on a uniform plank of mass 50kg. At the man's new position, what is the force the right support exerts on the plank
A monkey is chained to a stake in the ground. The stake is 3.00m from a vertical pole, and the chain is 3.4m long. How high can the monkey climb up the pole?
A 2.0 meter long pendulum is released from rest when the support string is at an angle of 25 degrees with the vertical. What is the speed of the bob at the bottom of the swing
A Cessna aircraft has a lift-off speed of 120 km/h. How long does it take the aircraft to become airborne
During a Carnot cycle, in the first process, an ideal gas is expanded isothermally at 500 K. 1,000 J of heat enters the system, What is the magnitude of Q that leaves the system
The distance among the objective and eyepiece lenses in a microscope is 22cm. The objective lens has a focal length of 5.5mm. What eyepiece focal length will give the microscope an overall angular magnification of 300?
A composite bar made from two different materials of equal cross-sectional areas are directly attached to each other making the bar a length of L = L1 + L2.
A horizontal block and spring system with negligible friction is initially in equilibrium. The mass of the block is 0.160 kg. Theblock is pulled to one side so that its initial displacement is0.150 m.
A hot air balloon decends toward the ground with a velocity of (1.6 m/s). A champagne bottle is opened to celebrate takeoff, expelling the cork horizontally with a velocity of (4.0 m/s) relative to the balloon.
A 0.570 kg ball is dropped from rest at a point 1.50 m above the floor. The ball rebounds straight upward to a height of 0.800 m. Illustrate what are the magnitude and direction of the impulse of the net force applied to the ball during the collis..
you are working as a summer intern for the illinois department of natural resources dnr and are assigned to some
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