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A plane leaves St.john's and heads due west for deer lakeat a velocity of 450km/h. The same day there is wind blowingto the north at 65km/h. At what speed and angle must the plane flying order to make it to deer lake?
A uniformly charged insulating rod of length 19.0 cm is bent into the shape of a semicircle. The rod has a total charge of -7.50 µC. Find the magnitude and direction of the electric field at O, the center of the semicircle. EO = N/C.
A putty of mass 0.06 kg is droppe at height h = 1 m above a horizontal rod. two 2 kg balls are attached to the ends of the thin rod, which has a mass of 1 kg and also is 1 m long. The rod can rotate about a horizontal axis.
The "hang time" of a punt is measured to be 4.30. If the ball was kicked at an angle of 68.0 above the horizontal and was caught at the same level from which it was kicked, what was its initial speed?
question1a 67 human sprinters can accelerate from rest to 11 in 3.0. throughout the similar interval a 32 greyhound can
why is it far less dangerous to stand in front of an intense beam of red light than in front of a very low-intensity
Air that initially occupies 0.47 m3 at a gauge pressure of 100 kPa is expanded isothermally to a pressure of 101.3 kPa, Compute the work done by the air
The vector is 3.5 long and is directed into this page. Vector points from the lower-right corner of this page to the upper-left corner of this page and has components -19.5, 25.
A 86 kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 380N. What is the final speed of the crate
A variable-length air column is placed just below a vibrating wirethat is fixed at both ends. The length of the air column open at one end is graduallyincreased from zero until the first position of resonance isobserved at L = 34.0 cm.
Suppose that the separation between two speakers A and B is 3.20 m and the speakers are vibrating in-phase. They are playing identical 121-Hz tones and the speed of sound is 343 m/s. An observer is seated at a position directly facing speaker B in..
A 100 Ohm resistor dissipates heat to its surroundings, isothermally. The resistor maintains a constant temperature of 300 K. How much energy does the surroundings absorb
Consider two wind instruments with pipes of the same length, but one is open and the other is closed on one end. what is the fundamental frequency of the closed pipe
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