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The width of a telescope aperture is important because it determines what you will be able to resolve.
(a) You are out stargazing with your 14.2-cm telescope. You point your telescope at an interesting formation in the sky, which you think is a binary star system. A binary star system consists of two stars in orbit around each other. You guess that the average wavelength coming from the stars is 582 nm. What is the minimum angular separation between the two stars required for your telescope to resolve the two stars of the binary system?
(b) Having graduated with a degree in astronomy, you seek a job at the Arecibo radio telescope. You use a large radio telescope (300-m diameter) to observe the same binary system that you observed in part (a). You estimate that the average radio emissions from the system have a wavelength of 5.10 cm. What is the minimum angular separation required for the Arecibo telescope to resolve the two stars of the binary system?
In which of the following situations could total internal reflection occur? Choose all that apply. Going from crystalline quartz to fused quartz. Going from oxygen to carbon disulfide.
You throw a ball torwards a wall at speed 21 m/s and an angle of 40 degrees above the horizontal. The wall is 22.0 m from the release point of the ball.
35.0g of copper pellets are removed from a 300?C oven and immediately dropped into 90.0mL of water at 25.0?C, What will the new water temperature be
question a person swings a 0.521-kg tether ball tied to a 4.60-m rope in an approximately horizontal circle. if the
If this lens is then immersed in water with a refractive index of 1.33, what will the focal lens of the lens be in this environment
Amber (n = 1.546) is a transparent brown-yellow fossil resin. An insect, preserved and trapped within the amber, appears to be 2.9 cm beneath the surface, when viewed directly from above. How far below the surface is the insect actually located?
A cannon is fired from the ground. The cannonball initially travels with a speed of 300 m/s at an angel of 25 degrees with respect to the ground, What is the cannonballs maximum height
q1. an airplane flies 200 km due west from city a to city b and then 315 km in the direction of 33.0deg north of west
A wheel spinning at 25 rev/s is slowed to a stop by a constant acceleration while turning 50rev. What is the magnitude of the constant acceleration
How does air resistance alter the way we perceive falling objects and is the force acting on a massive object larger than that acting on a less massive one? How can you verify this without taking any measurements?
A certain automobile engine delivers 2.24 104 W (30.0 hp) to its wheels when moving at a constant speed of 21.0 m/s ( 47 mi/h). What is the resistive force acting on the automobile at that speed?
A fireman d = 49.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of ?i = 27.0° above the horizontal, at what height will the stream of water strike the building
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