/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q. 20 Jill claims that her new rocket ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 36: Q. 20 (page 1059)

Jill claims that her new rocket is 100mlong. As she flies past your house, you measure the rocket鈥檚 length and find that it is only 80m What is Jill鈥檚 speed, as a fraction of c?

Short Answer

Expert verified

Jill have a speed0.6c

Step by step solution

01

Given Information

We have given that the length of the new rocket is 100m.

We need to find Jill鈥檚 speed.

02

Simply 

Consider:

L=100mL'=80m

using formula:

L'=L1-v2c2...(1)

Solve vcfrom equation (1)

L'=L1-v2c2L'L=1-v2c280100=1-v2c20.8=1-v2c20.64=1-v2c20.36=v2c20.6=vc鈬�v=0.6c

Jill's speed is 0.6cfrom speed of light

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

A 30-m-long rocket train car is traveling from Los Angeles to New York at 0.50c when a light at the center of the car flashes. When the light reaches the front of the car, it immediately rings a bell. Light reaching the back of the car immediately sounds a siren.

a. Are the bell and siren simultaneous events for a passenger seated in the car? If not, which occurs first and by how much time?

b. Are the bell and siren simultaneous events for a bicyclist waiting to cross the tracks? If not, which occurs first and by how much time?

The star Alpha goes supernova. Ten years later and 100lyaway, as measured by astronomers in the galaxy, star Beta explodes.

a. Is it possible that the explosion of Alpha is in any way responsible for the explosion of Beta? Explain.

b. An alien spacecraft passing through the galaxy finds that the distance between the two explosions is120ly. According to the aliens, what is the time between the explosions?

The half-life of a muon at rest is 1.5渭s. Muons that have been accelerated to a very high speed and are then held in a circular storage ring have a half-life of 7.5渭s.

a. What is the speed, as a fraction of c, of the muons in the storage ring?

b. What is the total energy of a muon in the storage ring? The mass of a muon is 207times the mass of an electron.

A baseball pitcher can throw a ball with a speed of 40m/s. He is in the back of a pickup truck that is driving away from you. He throws the ball in your direction, and it floats toward you at a lazy 10m/s. What is the speed of the truck?

At what speed, as a fraction of c, would a round-trip astronaut 鈥渓ose鈥� 125 of the elapsed time shown on her watch?
See all solutions

Recommended explanations on Physics Textbooks

Quantum Physics

Read Explanation

Electromagnetism

Read Explanation

Energy Physics

Read Explanation

Astrophysics

Read Explanation

Rotational Dynamics

Read Explanation

Electricity and Magnetism

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.