A How fast would it have to be going past you in order for it to appear only 5.5 m long? Give you answer as a ratio of the velocity to the speed of light c. Grade Summary Deductions v/c = Potential 10
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- Two spaceships can travel in any direction. Each ship carries equipment to measure the speed of light coming from any targeted star. In one experiment, each ship travels at a constant speed and they measure the speed of light from the same star. Which of the following statements is correct? a. If the spaceships travel in a direction perpendicular to the direction of the incoming light, they both measure a light speed of zero. b. No matter in what direction each spaceship travels, they measure a light speed of c. c. For each ship to measure a light speed of c, both ships must travel in the same direction but they can have unequal speeds. d. If the spaceships travel parallel to the incoming light, but in opposite directions, the ship travelling towards the star measures a greater speed of light.A spacecraft is moving at a speed of 0.530 c relative to the earth. Part A What is the ratio of the length of the spacecraft, as viewed through a telescope on earth, to its length when measured after landing on earth? (Assume that the spacecraft is moving at a right angle to the line of observation.) ? Submit Request AnswerM2
- Shannon observes two light pulses to be emitted from the same location, but separated in time by 1.5μs. Kimmie observes the emission of the same two pulses to be separated in time by 2.5μs. a. How fast is Kimmie moving relative to Shannon? b. According to Kimmie. what is the separation in space of the two pulses?Part A The distance to a particular star, as measured in he earth's trame of reference, is 734 ly (1 light year is the distance light travels in 1 y). A spaceship leaves earth headed for the star, and takes 3.66 y to arrive, as measured by passengers on the ship How long does the trip take, according to observers on oarth? Express your answer in years. y Submit Request Answer Part B What distance for the trip do passengers on the spacecraft measure? (Hint What is the speed of light in units of ly/y) Express your answer in light years. ly Submit Beavest AnewerAn electron at point A in the figure (Figure 1) has a speed v0v0 of 1.40×106 m/sm/s . Find the time required for the electron to move from A to B. Express your answer in seconds
- According to the formula for y, what would happen if the motion between the two frames was greater than the speed of light? Oy would be negative. Oy would be imaginary. O y would be one. O Nothing. O y would be infinity. Oy would be zero.An astronaut on a rocket ship is headed straight for another galaxy and an observer is standing on Earth. If they both shine a flashlight simultaneously as the rocket ship is moving away at a large speed, which of the following is true? A. The person on the rocket measures a higher velocity for the light from the flashlight. B. The person on the Earth measures a higher velocity for the light from the flashlight. C. They both measure the same velocity of light. D. It cannot be determined without additional information.Question 2 of 6 -/15 : Calculate the magnitude of the tension T and the angle 0 for which the eye bolt will be under a resultant downward force of 15.4 kN. Assume F = 7.9 kN, P = 5.4 kN, = 22° P T ENG 30°C Light rain Type here to search 080 O F 10 C O acer
- The nearest star to Earth is Proxima Centauri, 4.2 light-years away. Part A At what constant velocity must a spacecraft travel from Earth if it is to reach the star in 3.6 years, as measured by travelers on the spacecraft? Express your answer using two significant figures. IVE ΑΣΦ v= 0.805 Submit Part B X Incorrect; Try Again; 2 attempts remaining Previous Answers Request Answer How long does the trip take according to Earth observers? Express your answer using two significant figures. D ΠΫΠΙ ΑΣΦ t = 5.2 Submit ? Previous Answers Request Answer ? X Incorrect; Try Again; 4 attempts remaining C years1. An observer on earth sees objects A and B traveling toward the earth each with a speed v but from different directions. Draw the shape of each object as measured by someone traveling with that object, eg. how would objects A look according to someone on A. EarthDan holds a 5.0-m-long ladder parallel to the ground. He then gets up to a good sprint, eventually reaching 98% of the speed of light. How long is the ladder according to Dan, once he is running, and according to Carmen, who is standing on the ground as Dan goes by?