4 Part A At what speed, as a fraction of c, will a moving rod have a length 60% that of an identical rod at rest? v = ΜΕ ΑΣΦ ? C
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Part A
At what speed, as a fraction of c, will a moving rod have a length 60% that of an identical rod at rest?
v =
ΜΕ ΑΣΦ
?
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- n the year 2100, an astronaut wears an antique, but accurate, “quartz" wristwatch on a journey at a speed of 2.0 × 108 m/s. According to mission control in Houston, the trip lasts 14 hours. How long was the trip as measured on the watch? A) 6.7 hr B) 8.9 hr C) 10.4 hr D) 16.1 hr E) 18.8 hr2. Suppose a space vehicle with a rest mass of 150 000 kg travels past the International Space Station at a constant speed of 2.6 x 108 m/s with respect to the I.S.S. When an observer on the I.S.S. measures the moving vehicle, her measurement of the space vehicle length is 25.0 m. a. Determine the relativistic mass of the space vehicle. b. Determine the length of the space vehicle as measured by an astronaut on the space vehicle.f you were to travel to a star 135 light-years from Earth at a speed of 2.80×10 ^8 m/s, what would you measure this distance to be?
- please answer a, b and cAliens slowing down to observe Earth often are distracted by lighthouses. As aliens pass Earth in their spaceship they notice a lighthouse completes its circuit once every 7.0 s, however the lighthouse attendant has set the lighthouse to complete its circuit every 5.3 s from his point of view. How fast is the alien spaceship traveling in terms of the speed of light? cPart A A subatomic particle moves through the laboratory at 0.90 c. Laboratory experimenters measure its lifetime, from creation to annihilation, to be 2.1 ps. (1 ps = 10-12 s). According to the particle, how long did it live? Express your answer using two significant figures. tp = ΜΕ ΑΣΦ Submit Request Answer ? ps
- Newly sprouted sunflowers can grow at the rate of 0.30 in. per day. One such sunflower is left on Earth, and an identical one is placed on a spacecraft that is traveling away from Earth with a speed of 0.97 c. Part A How tall is the sunflower on the spacecraft when a person on Earth says his is 1.7 in. high? Express your answer using two significant figures. VE ΑΣΦ h = Submit = Previous Answers Request Answer ? X Incorrect; Try Again; 2 attempts remaining in. Review1. A rocket flies toward the earth at c, and the captain shines a laser light beam in the forward direction. Which of the follow- ing statements about the speed of this light are correct? (There may be more than one correct answer.) A. The captain measures speed c for the light. B. An observer on earth measures speed e for the light. C. An observer on earth measures speed c for the light. D. The captain measures speed c for the light.What are (a) the kinetic energy, (b) the rest energy, and (c) the total energy of a 1.2 g particle with a speed of 0.80 c ? Part A Express your answer using two significant figures. ΜΕ ΑΣΦ Ekinetic=263 Submit Previous Answers Request Answer × Incorrect; Try Again; 5 attempts remaining Part B Express your answer using two significant figures. ΜΕ ΑΣΦ Erest = Submit Request Answer Part C Express your answer using two significant figures. ΜΕ ΑΣΦ Etotal = Submit Request Answer ? ? ? J J J
- a. What is vav,x for the interval from t = 0 to t = 3.60 s? answer in m/s b. What is vav,x for the interval from t = 0 to t = 3.50 s? anser in m/sAn unstable particle at rest breaks up into two fragments of unequal mass. The mass of the lighter fragment is equal to 2.00 x 10-28 kg and that of the heavier fragment is 1.61 x 10-27 kg. If the lighter fragment has a speed of 0.893c after the breakup, what is the speed of the heavier fragment? C4 Part A Jill claims that her new rocket is 104 m long. As she flies past your house, you measure the rocket's length and find that it is only 72 m. What is Jill's speed, as a fraction of c? ΜΕ ΑΣΦ 20 ? v =