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What is the purpose of frets on a guitar or the fingerboard on a violin? In terms of frequency of the vibration of the strings, Why?
Does the fact that Maxwell's equations do not need to be modi?ed because of the special theory of relativity, whereas Newton's laws of motion do, mean that Maxwell's work is somehow greater or more signi?cant than Newton's? Explain.
When it rains, water vapor in the air condenses into liquid water, and energy is released. (a) How much energy is released when 0.0285 m (1.12 inch) of rain falls over an area of 2.59×106 m2 (one square mile)? (b) If the average energy needed to h..
A rocket that is in deep space and initially at rest relative to an inertial reference frame has a mass of 2.80 105 kg, of which 1.92 105 kg is fuel. What is the rocket's thrust
a satellite of mass 500 kg is placed in an orbit of radius 5 times the radius of earth, i.e. the distance between the satellite, calculate the cetripetal force experienced by the satellite
A soccer player kicks the ball from ground level with an initial velocity of 21 m/s at 35 degrees above horizontal. What is the direction of the ball's velocity when it reaches the goal 30m (horizontal) away
A block with mass m1 = 9.4 kg is on an incline with an angle ? = 24.0° with respect to the horizontal. For the first question there is no friction, but for the rest of this problem the coefficients of friction are: ?k = 0.23 and ?s = 0.253. * When th..
A 12-gram bullet is fired at 1600 m/sinto the wooden block of a ballistic pendulum, causing it to swingback, raising up 1.40 meters vertically. Find the mass of the block.
A transparent photographic slide is placed in front of a converging lens with a focal length of 2.25 cm. How far is the lens from the slide if the image is real
With air as the top medium and water as the bottom medium, use your protractor to adjust your laser to so it creates an angle of incidence of 30o. What is the angle of refraction
An ac circuit has an rms current of 5.8A. What is the peak current
Calculate the rotational constant B for H2(g)and D2(g)in unite of frequency. Rationalize the trend inrotational constant for these two molecule ,given the differ only in atomic mass.
Johnie wants to go sailing, but their is no wind. Johnie mounts an Industrial Fan on his sail boat with a 40 N force. What is the speed of the boat
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