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A telescope has a two ft mirror. How far apart in angle can the instrument distinguish two individual stars for blue (420 nm) light? How about for red (650 nm) light? The Very Large Array in New Mexico consists of a large number of radio telescopes arranged in a Y-pattern that is basically equivalent to a disk of 36 km in diameter. It senses radio waves in the range from 72 to 50,000 MHz. At 72 MHz, what is the minimum angular separation that it can recognize individual sources? How about for 50,000 MHz?
A metallic wire has a diameter of 4.12 millimeter. When the current in the wire is 8.00 Amp, the drift velocity is 5.40 x 10-5 m/s. Obtain the density of free electrons in the metal
What pull does each one exert if their resultant pull is 402-N straight upward.
A rifle with a weight of 20 N fires a 3.0 g bullet with a speed of 260 m/s. If a 700 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle
A vulture circles around its prey and moves in a horizontal circle of radius 45 m with a speed of 15 m/s. at what angle should the vulture be banked so that it does not tend to slip sideways
The Stanford Linear Accelerator (SLAC) is an electron accelator that provides an oscillating \radio-frequency" (RF) electric field in the form of a wave that stays in synchronism with the electrons being accelerated.
A fire truck siren produces a steady single tone of frequency 500 Hz when at rest. When the fire truck is at rest
A 150-g block of ice at 0°C is placed in an insulated thermos containing 568 g of water at 29°C. What is the mass of water at the end
The squadron commander has the mandate that the database update should be complete in less than one minute. If the topo database is 20 GB, and link is SONET, what is the minimum standard rate necessary.
A 15.0N package of whole wheat flour is suddenly placed on the pan of a scale such as you find in grocery stores. If the pan has negligible weight, find the maximum distance the spring will be compressed
A car accelerates from rest at a constant rate of 2.0 m/s^2 for 5.0 s. What is the speed of the car at the end of that time
A rocket is launched at an angle of 54.0° above thehorizontal with an initial speed of 97m/s. The rocket moves for 3.00 s along its initial line of motionwith an acceleration of 30.0m/s2. At this time, its engines fail and the rocket proceeds to m..
Sound Check, a merchandising company specializing in home computer or speakers, budgets its monthly cost of goods sold to equal 70% of sales. Calculate the budgeted merchandise purchases.
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