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The entrance to a large lecture room consists of two side-by-side doors, one hinged on the left and the other hinged on the right. Each door is 0.650 m wide. Sound of frequency 703 Hz is coming through the entrance from within the room. The speed of sound is 343 m/s. What is the diffraction angle of the sound under each of the following situations?
(a) when it passes through the doorway when one door is open
(b) when it passes through the doorway when both doors are open
A spaceship is coming directly toward you while you are in the international space station. You are told that the spaceship is shining sodium light. You have an apparatus that and resolve two closely spaced wavelengths if the difference is 0.55 nm. I..
A curve of radius 152 m is banked at an angle of 11°. An 722-kg car negotiates the curve at 86 km/h without skidding. avoid the effects of air drag and rolling friction.
A square coil of wire with 15 turns and an area of 0.40 m2 is placed parallel to a magnetic field of 0.75 T. What is the magnitude of the average induced emf
An aluminum rod is 21.5 cm long at 20°C and has a mass of 350 g. If 14,000 J of energy is added to the rod by heat, what is the change in length of the rod
An electron is a subatomic particle (m = 9.11 x 10-31 kg) that is subject to electric forces. obtain the magnitudes of the net force acting on electron
A satellite in geosynchronous orbit orbits the earth in 24 hours. find the radial velocity and the angular velocity
A mass at the end of a spring is at distance x = +2.18 cm from the equilibrium position moving with velocity v = - 20.2 cm/s. Find the amplitude of the motion in cm
At the lowest point in a vertical dive (radius = .69 km), Determine the magnitude of the acceleration of the pilot
A particle's trajectory is described by x=(12t3?2t2)m and y =(12t2?2t)m, What is the particle's direction of motion, measured as an angle from the x-axis, at t=5.0s
q1. a solid cylindrical disk has a radius of 0.14 m. it is mounted to an axle that is perpendicular to the circular end
A ball is thrown nearly vertically upward from a point near the edge of a tall building. it misses the edge of the building in ts way down and passes a point 160ft below its starting point 5 seconds after it leaves the thrower's hand.
A cube of ice is taken from the freezer at -8.50C and placed in a 95-g aluminum calorimeter filled with 310 g of water at room temperature of 200C. Find the mass of the ice cube
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