GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 16 Jan 2019, 20:55

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
  • The winning strategy for a high GRE score

     January 17, 2019

     January 17, 2019

     08:00 AM PST

     09:00 AM PST

    Learn the winning strategy for a high GRE score — what do people who reach a high score do differently? We're going to share insights, tips and strategies from data we've collected from over 50,000 students who used examPAL.
  • Free GMAT Strategy Webinar

     January 19, 2019

     January 19, 2019

     07:00 AM PST

     09:00 AM PST

    Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.

Most attempts by physicists to send particles faster than the speed of

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

 
Senior Manager
Senior Manager
User avatar
P
Joined: 24 Oct 2016
Posts: 264
GMAT 1: 670 Q46 V36
Re: Most attempts by physicists to send particles faster than the speed of  [#permalink]

Show Tags

New post 23 Oct 2018, 14:29
Got 3/3 correct in 8 min including 3:45 min to read the passage!

Passage Map:


1) Background about quantum tunneling
2) History of QT
3) New evidence supporting it
_________________

Most Comprehensive Article on How to Score a 700+ on the GMAT (NEW)
Verb Tenses Simplified

If you found my post useful, KUDOS are much appreciated. Giving Kudos is a great way to thank and motivate contributors, without costing you anything.

Manager
Manager
avatar
B
Joined: 01 Nov 2018
Posts: 56
GMAT 1: 690 Q48 V35
GPA: 3.88
Reviews Badge CAT Tests
Re: Most attempts by physicists to send particles faster than the speed of  [#permalink]

Show Tags

New post 04 Jan 2019, 15:52
3/3 in 8:32 although I had to guess on question 2. I have a question to all gmat test takers and gmat moderators. For a question such as question 2, if you feel that you are no closer to getting the right answer after spending 1:30min and the clock is ticking, do you just pick an answer and move on? If I subtracted the time I spent on that question (2:40), I would have finished this passage in under 6 minutes and I felt confident that I got questions 1 and 3 correct. I feel on the actual test, spending that much time and hoping you made the right "educated guess" is risky and could impact you on the rest of the Verbal section. Thoughts?
Intern
Intern
avatar
B
Joined: 22 Oct 2018
Posts: 3
Most attempts by physicists to send particles faster than the speed of  [#permalink]

Show Tags

New post Updated on: 12 Jan 2019, 06:02
The answer key in OG 2019 version is wrong: it states E as OA while the solutions confirm C

Originally posted by isabelle95 on 12 Jan 2019, 03:16.
Last edited by isabelle95 on 12 Jan 2019, 06:02, edited 1 time in total.
Intern
Intern
avatar
B
Joined: 08 Jul 2016
Posts: 41
CAT Tests
Re: Most attempts by physicists to send particles faster than the speed of  [#permalink]

Show Tags

New post 12 Jan 2019, 04:17
bpdulog wrote:
Shree9975 wrote:
Steinbeck

Their grounds were calculations that suggested that the time
it takes a particle to tunnel through a barrier increases with the thickness of the barrier until tunneling time reaches a maximum; beyond that maximum, tunneling time stays the same regardless of barrier thickness. This would imply that once maximum tunneling time is reached, tunneling speed will increase without limit as barrier thickness increases. Several recent experiments have supported this hypothesis that tunneling particles sometimes reach superluminal speed. According to measurements performed by Raymond Chiao and colleagues, for example, photons can pass through an optical filter at 1.7 times the speed of light

Look at the bold part, we can infer from that.

Thanks,
SR


Thanks! This is helpful. Can someone explain why B is false?

The passage states that tunneling time increases with barrier thickness up to a limit. As the thickness goes up, tunneling speed should increase at the time limit. Doesn't this imply that if there is no time limit, then the speed can decline or stay the same infinitely?


Tunneling speed = Barrier thickness/Tunneling time. We cannot comment whether the tunneling speed would decrease because we do not know how tunneling time is increasing with respect to increase in barrier thickness. We just know that these two variables ( thickness and time) will increase but we do not know how these two variables behave with respect to each other. if it takes less and less time to cover larger distance (do not get confused here..time will still increase with distance) , then speed will increase. If it it takes more and more time to cover larger distance, , then speed will decrease.
GMAT Club Bot
Re: Most attempts by physicists to send particles faster than the speed of &nbs [#permalink] 12 Jan 2019, 04:17

Go to page   Previous    1   2   [ 24 posts ] 

Display posts from previous: Sort by

Most attempts by physicists to send particles faster than the speed of

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.