At what position is the K.E. of a particle performing S.H.M. three times its P.E. ?
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- My question is the calculation of conversion from F to C. As F=(9/5)C+32, 43.333 seems not correct(a) In communicating with an astronaut on the moon, 3.8E8 m from earth, what is the minimum time delay in getting a response to a question? (b) What would the minimum time delay be for communication with an astronaut at a distance of 4 light-years from earth?How long should it take the voices of astronauts on the Moon to reach the Earth? Assume that the only significant time is the transit time from the Earth to the Moon, at the speed of light. Suppose that the astronaut on the surface of the Moon, the receiver on the surface of the Earth, and the centers of the Earth and the Moon are aligned. The distance between the centers of the Earth and the Moon is 384×103km, the radius of the Earth is 6.38×103km, the radius of the Moon is 1.74×103km.
- Can I get handwritten solutions to a and b please as the handwritten versions are easier to follow along withProcesses at the center of a nearby galaxy cause the emission of electromagnetic radiation at a frequency of 3.97×1013 Hz.Detectors on Earth measure the frequency of this radiation as 3.11×1013 Hz. How fast is the galaxy receding from Earth?Answer the ff and show complete solution:
- How strong a magnetic field (B, in Tesla) is needed to keep an electron moving at a speed of (1/100)c in a circular path of radius 1m?. A) How fast would a motorist have to travel for a yellow traffic light (λ = 590. nm) to appear green (λ =500. nm) to him due to the Doppler shift? B) Would the motorist be traveling towards or away from the traffic light?You have been posted to a remote region of space to monitor traffic. Near the end of a quiet shift, a spacecraft streaks past. Your laser-based measuring device reports the spacecraft’s length to be 85 m. The identification transponder reports it to be the NCXXB-12, a cargo craft of proper length 100 m. In transmitting your report to headquarters, what speed should you give for this spacecraft?
- While passing between Earth and the Moon, a spacecraft is momentarily located on the line connecting the centers of the two bodies and is at a distance of d = 166 km from a radio antenna on the surface of Earth. The distance from the antenna to the moon is denoted by dm. (b) Scientists on Earth send a command to the spacecraft, which immediately sends back a receipt confirmation signal. How long, in seconds, after the scientists send the command does it take before they learn it was received? (c) Scientists bounce a laser beam off the Moon and measure the two-way travel time to be 2.42 s. How far away is the Moon in meters?(2).What is the range of vehicle speeds kinematically possible to achieve in pure electric mode?The aurora is caused by electrons and protons from the sun that get captured by the earth's magnetic field and spiral into its atmosphere along the direction of the earth's magnetic field. The typical speed of captured electrons is about 0.003c (0.003 times the speed of light), and the typical speed for captured protons is about 20 times smaller. What are the maximum radii of the circular component of these particles' motion around the field direction? What are their orbital frequencies?