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The third harmonic Of an organ pipe of length L open at one end has nodes at the closed end, 2L/5 from the closed end, and 4L/5 from the closed end. The open end is an antinode. What expression describes this wave? Take the speed of sound to be 336 m/s, the length of the pipe to be 2.0 m, and let x be the distance from the closed end.
John starts at the origin and walks 3.0 km due east. If he then walks 30? north of east for 8.0 km, what is his distance from the origin (in km)
A wire coil of 35 turns has a cross-sectional area of 12 cm2. The coil is placed in a uniform field of a large magnet with B = 0.12 T. What will be the average current produced
Write down the original position of the system
A tennis player hits a 58.0g tennis ball so that it goes straight up and reaches a maximum height of 7.05m . A) How much work does gravity do on the ball on the way up? B) How much work does gravity do on the ball on the way down?
What is the friction force that acts on the bear?
A helium-neon laser (?=633 nm) illuminates a diffraction grating. What is the spacing between slits of the grating
Two 10 cm long thin glass rods uniformly charged to + 10;{rm nC} are placed side by side, 4cm apart. What are the electric field strengths E_1, E_2, and E_3 at distances 1.0 cm, 2cm, and 3cm to the right of the rod on the left, along line connecti..
A BMW of mass 2.0 x 103 kilogram is traveling at 42 m/s. It approaches a 1.0 x 103 kilogram Volkswagen going 25 m/s in the same direction and strikes it in the rear. If the collision slows the BMW down to 33 m/s, find what is the speed of the BMW a..
Two cannons, aimed at each other, stand on roofs of two identical (meaning same height) very tall buildings, 100 meters apart. Both cannons are fired at the same time. However, one cannonball is bigger and so it is fired at 20 m/s, while the o..
In a slide or movie projector, the film acts as the object whose image is projected on to the screen. A 105 mm focal length lens is to project an image on a screen 6.5 m away. Decide how far from the lens the slide must be. Of the slide is 36 mm wide..
A spacecraft is in orbit around a planet. The radius of the orbit is 3.2 times the radius of the planet, What is the period of the spacecraft's orbit
An electromagnet is made by inserting a soft iron core into a solenoid. The solenoid has 1800 turns, radius 2.0 cm, and length 25 cm. What is the relative permeability KB of the iron core
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