100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
HESI A2 VERSION 1 EXAM ALL SUBJECTS COVERED. $13.99   Add to cart
Quickly navigate to
Preview
  2.  
  3. HESI A2 V1
  4.  
  5. HESI A2 V1

Exam (elaborations)

HESI A2 VERSION 1 EXAM ALL SUBJECTS COVERED.

1 review
 25 views  1 purchase
  • Course
  • HESI A2 V1
  • Institution
  • HESI A2 V1

HESI A2 VERSION 1 EXAM 2022 ALL SUBJECTS COVERED.Have you ever wondered why the whistle of a traveling, distant locomotive predicts its approach several yards before anyone actually sees it? Or why an oncoming ambulance’s screaming siren is heard momentarily several feet before the ambulance c...

[Show more]

Preview 4 out of 73  pages

Document information

  • July 17, 2023
  • 73
  • 2022/2023
  • Exam (elaborations)
  • Questions & answers

Subjects

  • hesi a2 version 1 exam 2022 all subjects covered

Written for

  • HESI A2 V1
  • HESI A2 V1

1  review

review-writer-avatar

By: consultant001 • 9 months ago

Seller

avatar-seller
classrep

Reviews received

Content preview

HESI A2 VERSION 1 EXAM 2022 ALL SUBJECTS
COVERED


READING COMPEHENSION


Doppler Effect
Have you ever wondered why the whistle of a traveling, distant locomotive predicts its
approachseveral yards before anyone actually sees it? Or why an oncoming
ambulance’s screaming sirenis heard momentarily several feet before the ambulance
comes into full view, before it passes you, and why its siren is still heard faintly well
after the ambulance is out of sight?
What you are witnessing is a scientific phenomenon known as the Doppler Effect.
What takes place is truly remarkable. In both of these instances, when the train or
ambulance moves towardthe sound waves in front of it, the sound waves are pulled
closer together and have a higher frequency. In either instance, the listener positioned
in front of the moving object hears a higherpitch. The ambulance and locomotive are
progressively moving away from the sound waves behind them, causing the waves to
be farther apart and to have a lower frequency. These fast- approaching modes of
transportation distance themselves past the listener, who hears a lower pitch.

1. Which statement is not listed as a detail in the passage?

A. The oncoming sound waves have a higher pitch because of high frequency and
closenessof waves.

B. The oncoming sound waves have a higher pitch because of low frequency and
closenessof waves.

C. The whistling sound of the locomotive as it approaches and passes can be
explained bythe Doppler effect.

D. The high-pitched sound of the ambulance as it approaches and passes can be
explainedby the Doppler effect.



2. What is the main idea of the passage?
A. Trains and ambulances make distinctly loud noises.
B. Low-frequency waves make high-pitched sounds.

C. High-frequency waves make low-pitched sounds.
D. The Doppler Effect explains the rationale for why sound is heard initially more
stronglyand then faintly after a moving object has passed.



3. What is the meaning of the word phenomenon in the second paragraph?

,A. Something that is lifeless to the senses

,B. Something that is nonchalant
C. Something that is significant but unusual

D. Something that is chemical in origin



4. What is the author’s primary purpose in writing this essay?
A. To entertain the reader with information about trains and ambulances

B. To inform the reader about avoiding accidents, which involve trains and
ambulances

C. To inform the reader about how movement affects sound
D. To analyze the difference between train and ambulance sounds



5. Which sound waves have a higher pitch?

A. Those waves that are closer together

B. Those waves that are farther apart

C. Those waves that travel a long distance
D. Those waves that travel a short distance



6. Which sound waves have a lower pitch?

A. Those waves that are closer together

B. Those waves that are farther apart

C. Those waves that travel a long distance

D. Those waves that travel a short distance



Electrocardiogram
Beep!…Beep!…Beep! is the audible rhythmic sound made as the strength of the heart
muscle ismeasured. The signal cadence has a characteristic record that varies in
every individual. This record is called an electrocardiogram, or ECG.
In the body, an array of systemic neural responses constantly occur, emitting electric
currents. The electric currents can be detected on the surface of the body, and if a
person is hooked to anamplifier, these impulses are recorded by an electrocardiograph.

Most of the information obtained is about the heart because the heart sends out
electric currentsin waves. This “wave of excitation” spreads through the heart
wall and is accompanied by electric changes. The wave takes place in three distinct
steps.

, Initially, the “wave of excitation” accompanied by an electric change lasts for
approximately 1to 2 seconds after the contraction of the cardiac muscle. The electric
impulses are discharged

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller classrep. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $13.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

78834 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$13.99  1x  sold
  • (1)
  Add to cart