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A certain stick has a proper length of one meter. Observer A, moving with uniform velocity parallel to the stick, measures the length to be one quarter of its proper length. Observer B, at rest with respect to the stick, records the two events corresponding to the first observer's determination of the positions of the two ends during the measurment. What is the space interval and the time interval in between the two events as seen by Observer B?
The length of a table in the laboratory was measured as 182.36 cm, What is the relative uncertainty of the length, What is the uncertainty of the length
A certain elevator cab has a total run of 190 m and a maximum speed of 305 m/min, and it accelerates from rest and then back to rest at 1.22 m/s2. How long does it take to make the nonstop 190 m run, starting and ending at rest
A person decides to use an old pair of eyeglasses to make someoptical instruments. What is the maximum angular magnificationhe can produce in a telescope
What is the rms current in an RL circuit when a 60.0Hz 240V rms ac voltage is applied, What is the phase angle between voltage and current
Professor Spenditt, oblivious to economics and politics, proposes the construction of a circular proton accelerator around the Earth's circumference using bending magnets that provide a magnetic field of 1.5T. What would be the kinetic energy of prot..
A soap bubble (with index of refraction 1.33) is floating in air. If the thickness of the bubble wall is 114 nm, what is the wavelength of the visible light that is most strongly reflected
A person walks first at a constant speed of 5 m/s along a straight line from point A to point B, How much distance does the person cover on her trip
two objects one with mass will 80 g and the other with mass 20 g are pushed by a spring in opposite directions. if the
Calculate the mass flow rate (in grams per second) of blood (? = 1.0 g/cm3) in an aorta with a cross-sectional area of 2.0 cm2 if the flow speed is 30 cm/s
The bullet becomes embedded in the block. if the coefficient of kinetic friction between the block and surface is .65 what was the speed of the bullet at once before impact.
Starting from rest, you move with a constant acceleration of 2.1 m/s2 for 15.0 s and then move with an acceleration of -2.1 m/s2 for another 15.0 s. How far do you go during the whole trip
A 30 g dart is shot straight up at 9.7m/s . At the same instant, a 24g ball of cork is dropped from 2.0m above the dart. What is the direction of the cork ball immediately after it is hit by the dart
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