Stars other than our sun normally appear featureless when viewed through telescopes. Yet astronomers can readily use the light from these stars to determine that they are rotating and even measure the speed of their surface. How do you think they can do this?

Q: )A light i ring h 8lis of leagth extersible sh thereaded ro ugh a par bcle mass m is a4 est at a 0…

A: Here in the above question,  Length of the string = 3l as per the given question,  One particle A,…

Q: A stationary police car has its siren going at a frequency of 450 Hz. The driver of car passing by…

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Q: You and a partner sit on the floor and stretch out a coiled spring to a length of 9.1 meters. You…

A: Frequency of the wave = 1.71 Hz.

Q: The "red shift" of radiation from a distant galaxy consists of the light Hy, known to have a…

A: The wavelength of the redshift is 434 nm. The observed wavelength from the laboratory is 462 nm.

Q: If Q₁ = 3.2 µC, what is Q₂? r₁ = 0.8 cm Q1 Q2 r₂ = 1.4 cm

A: Potential is same for both the spheresElectric potential of a point charge is V=kQ/r V = k Q / r .…

Q: 31. Two particles A and B move on curves r = 2i + 5j and r, = 2fi + 5j respectively, for some…

A:

Q: what is the speed of wave if the frequency is 50HZ and wavelength is 4000000nm? * 20mm/s 2m/s…

A: Given : Frequency (f) = 50 Hz Wavelength (λ) = 4000000 nm = 0.004 m

Q: value of the mass

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Q: An astronomer points a laser at an asteroid and measures the length of time until the reflected beam…

A: Time taken by laser light to reach at the asteroid and then reflected back to the earth is T=17.13…

Q: 4.) Two astronauts are 4.0m apart in their spaceship. One speaks to the other. The conversation is…

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Q: 7. How fast would a motorist have to be traveling for a yellow (A = 590 nm) traffic light to appear…

A: The objective of this question is to find out the speed at which a motorist must travel for a yellow…

Q: Observations of a nearby astrophysical object reveal that it flickers (i.e. varies in brightness)…

A: Astrophysics.

Q: Radar is used to determine distances to various objects by measuring the round-trip time for an echo…

A: Given here radar is used to find the distance of various objects by using echo we have to answer the…

Q: What is the amplitude in meters, and midline, and period? How high are you off the ground after 1…

A: given, diameter of ferris wheel= 50m distance from ground = 2m then, amplitude = ? midline=? time…

Q: 3.c) Assume that the orbit of the moon about the Earth is a pertect circle with a center-to- center…

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Q: 26. (II) A series of point sources are equally spaced at a dis- tance d apart along a line, as in…

A: It is given that the points sources are equally spaced and having distance "d" and α be the phase.…

Q: What frequency clock source will produce clock waveforms having a period equal to 2.0 µsec? * Note:…

A: Formula:f=1Twhere, f is the frequencyGiven:T=2.0 μsec= 2×10-6 sec

Q: Part (f) What is the direction of the resultant vector: D +F? = 176.56|

A: different vectors are given as shown in the figure. direction and magnitude of each vector is given…

Q: cceleration of a particle is given by the equation a = (20 – 0.3s2) m, where s is in meters. Solve…

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Q: Please, I want to solve the question correctly, clearly and concisely

A: Step 1:Step 2:Step 3:

Q: X-rays used by dentists have a wavelength of roughly 3,0 x 10^-11 m. What is the frequency of these…

A:

Q: 7. Determine that the particle must travel at the speed of light in vacuum (C) so that the particle…

A: Have a look dear

Q: A 0.5 kg cart is connected to a light spring of spring constant 20.0 Nm. The cart is released and…

A: Given, mass= 0.5 kg Spring constant k=20.0 N/m amplitude, x= 3 cm=0.03 m v=-0.1 m/s

Q: 1 A light shines from the top of a pole 50 ft high. A ball is dropped from the same height from a…

A: Given Data: Height (h) = 50 ft.Distance 1 (d) = 30 ft.Time (t) = 12 s.Distance 2 (s) = 16t^2 ft. To…

Q: QUESTION 1 1-The following equation refers to V-pendulum experiment: Y=-14X+15 and T4 = (4x4 L k/g2)…

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Q: A compact disc (CD) is played by a cd player, which uses a laser to read the tracks on the disc. The…

A: Statements A,C and D are true.

Q: Bob has just finished climbing a sheer cliff above a level beach and wants to figure out how high he…

A:

Q: The light from a supernova explosion is measured on a spacecraft moving towards the exploding star.…

A: The Doppler effect is the apparent change in frequency of a wave in relation to an observer moving…

Q: Angle (Ⓡ) Flight Time (s) 0 0.64 15 30 1.15 1.76 Flight Range (m) 9.58 16.62 22.87 Maximum Height…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: Assume that when I was 30 years old, I invented a spaceship capable of traveling at 95% of the speed…

A: The speed of spaceship is  v=0.95chence, β=vc=0.95 The spaceship is approaching the star (the source…

Q: In a not so far away solar system, the sun's intensity is 30 W/m2 for a planet located a distance R…

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Q: Part C: Short Answer- Communications 32. Describe a situation where an object is accelerating but…

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Q: Who experimentally measured the speed of light and how?

A: Ole Roemer was the first person who measured the speed of light.

Q: 4A. Radio waves travel at the speed of light, 300,000 km/s (3x10^8 m/s). Determine the wavelength of…

A: Given that, Velocity of the Radio waves (v) = 3×10^8  m/sFrequency received (f) = 200 megahertz…

Q: Consider a spiral galaxy that is moving directly away from Earth with a speed V = 3.040×105 m/s at…

A: Speed of COM of galaxy V=3.04*105m/s and speed of the spiral arms v=6.95*105m/s. Frequency emitted…

Q: What is a wiggle in time called? What do you call a wiggle in space and time?

A: A vibration is a periodic “wiggle” in time.

Q: Four rockets are launched with the same amount of force. Order the rockets by the distance they…

A: