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An observer in frame S standing at the origin observes two flashes of colored light separated spatially by ?x = 2980 m. A blue flash occurs first, followed by a red flash 5 µs later. An observer in S' moving along the x axis at speed v relative to S also observes the flashes 5 µs apart and with a separation of 2980 m, but the red flash is observed first. Find the magnitude and direction of v.
When these waves move into a shallower part of the lake, their speed decreases to 1.6 m/s, though their frequency remains the same. Find out the wavelength of the waves in the shallower water.
A ski jumper has 1.2 ´ 10 J of potential energy at the top of the ski jump. The friction on the jump slope is small, but not negligible. What can you end about the ski jumper's kinetic energy at the bottom of the jump.
define the speed with which the cart reaches positions 3, 2, and 1 (in that order). Neglect friction. Let g = 9.81 m/s2.
A Norwich MCE student is involved in a crucial out of class experiment. He is in his dorm room 34 feet above an historic rock wall. Describe the final result and state any assumptions that you need to make. Would the final result be any different o..
An electric field of 490000 N/C points due west at the certain spot. What is the magnitude of the force that acts on a charge of -8.3 C at this spot.
Two cars are 1.35km apat and starting com rest mov directly toward each other. Car a has an acceleration of .37 m/s2 and car b has acceleration of .52 ms2
A slide projector needs to create a 86 cm high image of a 2.0 cm tall slide, What focal length does the lens need and How far should you place the lens from the slide
A dog running in an open field has components of velocity = 3.4 and = -1.9 at time = 10.4. For the time interval from = 10.9 to = 24.7, the average acceleration of the dog has magnitude 0.45 and direction 25.
A 529 kg automobile slides across an icy street at a speed of 66.0 km/h and collides with the parked car which has a mass of 856 kg. The two cars lock up and slide together. What is the velocity of the two cars just after they collide.
A 0.5kg block is attached to a spring with spring constant 18 N/m. As the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 34cm/s.
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1020 Hz. The bird-watcher, however, hears a frequency of 1060 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?
A proton and an electron are moving due east in a constant electric field that also points due east, Determine the magnitude of the acceleration of the proton and the electron
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