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Two identical sinusoidal traveling waves are moving in the same direction along a stretched string. The amplitude of the resultant wave is 1.80 times that of the common amplitude of the two combining waves. What is the phase difference between the two waves ?
q1. sunlight enters a room at an angle of 31 above the horizontal and reflects from a small mirror lying flat on the
You are examining a flea with a converging lens that has a focal length of 4.40 cm. If the image of the flea is 8.00 times the size of the flea, how far is the flea from the lens
A circuit consists on an emf of 48 V, a resistor with R = 8.0 ohms, an inductor with L = 2.0 H, and a switch, all connected in series. At this instant, what is the current in the resistor
A member of an aircraft maintenance crew wears protective earplugs that reduce the sound intensity by a factor of 405. When a jet aircraft is taking off, the sound intensity level experienced by the crew member is 90 dB. What sound intensity level..
A bouncy ball is dropped from a heigh h above a floor. If every bounce robs the ball of 6.7% of its kinetic energy just before the bounce, how high will it reach before its eleventh bounce
An eagle (mA = 4.3 kg) moving with speed vA = 7.8 m/s is on a collision course with a second eagle (mB = 5.6 kg) moving at vB = 10.2 m/s in a direction perpendicular to the first
1.define a lie in the strict or formal sense.2.explain what is meant by communication?3.what is the principal purpose
An airplane flies in a loop (a circular path in a vertical plane) of radius 150m . The pilot's head always points toward the center of the loop, What is the apparent weight of the pilot at this point
A scaffold of mass 80.0kg and length 5.10 m is supported in a horizontal position by a vertical cable at each end.
A Federation starship ( 2.20×10^6kg ) uses its tractor beam to pull a shuttlecraft ( 2.20×10^4kg ) aboard from a distance of 12.0km away. The tractor beam exerts a constant force of 4.0×104N on the shuttlecraft. Both spacecraft are initially at..
A 250 g block of wood hangs from a light string 0.78 m long. The block is shot with a bullet of mass 4.2 g, what was the velocity of the bullet just before it hit the block
A transformer has a primary coil with 1200 turns and a secondary coil with 225.0 turns. what is the voltage output from the secondary coil
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