/*! 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} Problem 19 Into how many time zones are the... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 8: Problem 19

Into how many time zones are the United States and its territories divided?

Short Answer

Expert verified
The United States and its territories are divided into 9 time zones.

Step by step solution

01

Identify the time zones in the mainland USA

Identify the different time zones present across the mainland of United States. They are Eastern, Central, Mountain, and Pacific.
02

Identify the time zones in US territories

Identify the different time zones in the US territories. This includes Alaska Standard Time, Hawaii鈥揂leutian Standard Time, Samoa standard time and Chamorro Standard Time.
03

Add up the total

Add up the number of time zones from the mainland United States and the territories.

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!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Mainland USA Time Zones
The United States spans a vast area across North America, resulting in different time zones across its mainland. These time zones help coordinate human activities with the Earth's rotation. In the mainland United States, there are four primary time zones, each covering specific regions:
  • Eastern Time Zone (ET): This zone covers the eastern part of the US, including major cities like New York and Washington, D.C. It鈥檚 5 hours behind Coordinated Universal Time (UTC-5).
  • Central Time Zone (CT): Residents of cities like Chicago and Dallas live in this zone, which is one hour behind Eastern Time (UTC-6).
  • Mountain Time Zone (MT): This zone includes regions like Denver and Phoenix and is two hours behind Eastern Time (UTC-7).
  • Pacific Time Zone (PT): This is three hours behind Eastern Time (UTC-8) and includes cities such as Los Angeles and Seattle.
Understanding these zones is essential for anyone working across different regional areas in the US or conducting business internationally.
US Territories Time Zones
Beyond the mainland, the US has several territories that also operate in their own distinct time zones. These territories may be across oceans or adjacent to North America but maintain their timing systems based on their geographic locations. Here are the key time zones for US territories:
  • Alaska Standard Time (AKST): Although technically part of the mainland, Alaska is often discussed separately due to its size and distance. It's 1 hour behind Pacific Time (UTC-9).
  • Hawaii鈥揂leutian Standard Time (HAST): Used in Hawaii and parts of the Aleutian Islands, this time zone is 10 hours behind UTC (UTC-10).
  • Samoa Standard Time (SST): This is used by American Samoa, 11 hours behind UTC (UTC-11).
  • Chamorro Standard Time (ChST): This applies to Guam and the Northern Mariana Islands, 10 hours ahead of UTC (UTC+10).
These zones reflect the cultural and geographic diversity of US territories, highlighting how timekeeping adjusts based on location.
Time Zone Calculation
Calculating time differences across various US regions involves understanding their relative time zones. To compute the time difference between two locations, consider their respective offsets from UTC. You can then assess how many hours separate them:
  • Determine the UTC offset for each location. For instance, Eastern Time is UTC-5 and Pacific Time is UTC-8.
  • Subtract the smaller UTC offset from the larger one. For Eastern vs. Pacific time, it's 8 - 5 = 3 hours difference.
  • Account for Daylight Saving Time if applicable. This usually advances the clock by 1 hour during warmer months. For example, Eastern Daylight Time (EDT) is UTC-4.
Using this method, individuals and businesses can align activities and operations across various regions efficiently, ensuring smooth communication and scheduling.

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

Most car owners drive their cars an average of 12,000 miles a year. Assuming a 20 miles/gallon gas consumption rate, determine the amount of fuel consumed by 150 million car owners on the following time basis: a. average daily basis b. average weekly basis c. average monthly basis d. average yearly basis e. over a period of ten years Express your results in gallons and liters.

The 2009 World Record for the \(100-\mathrm{m}\) sprint is \(9.58\) seconds and belongs to a Jamaican runner named Usain Bolt. Assuming constant acceleration, determine the speed of Mr. Bolt at distances of \(10 \mathrm{~m}, 20 \mathrm{~m}, 30 \mathrm{~m}\), \(\ldots, 80 \mathrm{~m}, 90 \mathrm{~m}\), and \(100 \mathrm{~m}\).

A conveyer belt runs on 3 -in. drums that are driven by a motor. If it takes \(6 \mathrm{~s}\) for the belt to go from zero to the speed of \(3 \mathrm{ft} / \mathrm{s}\), calculate the final angular speed of the drum and its angular acceleration. Assume constant acceleration.

The period of oscillation for a pendulum on Earth is 2 seconds. If the given pendulum oscillates with a period of \(4.9\) seconds on the surface of the Moon, what is the acceleration due to gravity on the Moon's surface? Express your answer in both SI and U.S. Customary units.

Express the angular speed of the earth in \(\mathrm{rad} / \mathrm{s}\) and rpm.
See all solutions

Recommended explanations on Physics Textbooks

Rotational Dynamics

Read Explanation

Physics of Motion

Read Explanation

Fields in Physics

Read Explanation

Waves Physics

Read Explanation

Turning Points in Physics

Read Explanation

Electromagnetism

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.