Part I: Multiple Choice: Pick the answer that best answers the question. No part

Question

Part I: Multiple Choice: Pick the answer that best answers the question. No partial credit. 2 Points each. 1. If you were in a spaceship traveling at a speed close to the speed of light (with you would notice that A) your pulse rate is different than normal ) some of your physical dimensions were smaller than normal.x oy None of these effects occur B) your mass is different than normal ) More than one of these effects occur 2 A right-angled construction frame ABC, when measured at rest, has dimensions as follows: AB 20.00 m 20.00 m, AC 10.00 m, and BC-17.32m. The frame is given a velocity of 0.85 c, relative to the space platform, in a direction parallel to AC. The dimensions of the moving frame are measured simultaneously by observers on the platform. In the figure above, the length BC measured by these observers is closest to: A) 19 m B) 15 m D) 11 m E) 17 m A star is moving toward the Earth with a speed of 0.9 c (90%, the s ich moves a way from the star at the speed of light. Relative to us on Earth, the s peed of light). It en ing towards us (emitted by the star) is peec )0.98 c 1.9c D) 1.2 c a straight line at a speed of 0.8 c (relative t away fro m the spaceship (traveling in the same direction as the spaceship) o Earth). It laun to Earth, the speed of the missile is and less than 1.4 c. (B)c. reater than o.8 c and less than c.

Explanation / Answer

2) E) 17 m

because, As the triangle is moving in horizontal direction its vertical length does not decreases.
But Its horizontal length decreses.

3) A) C

The speed of light always remains constant. It does not depend on speed of the source of the light.

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.