Data is collected only once from a participant is not a characteristic of a longitudinal study. Thus, the correct option is A.
<h3>What is a Longitudinal study?</h3>
A Longitudinal study may be defined as a scientific approach to a specific research that involves recounted compliances of the duplicate variables over short or long periods of time.
A longitudinal study involves the collection of data from the same participants at different points in time, collection of data from a large sample size at the same time, and collection of data that can span over several years.
Therefore, the correct option for this question is A.
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Answer:
a. Web mail - 3. Your school email system
b. honor code - 4. the location of your school handbooks.
c. Virtual library - 5. a forum to discuss course ideas.
d. School directory - 1. Contains student and learning coach information
e. message board - 2. guidelines for completing and submitting work
Explanation:
There can be various school tools which will help manage information of the school system.
Web mail will contain all the school emails, correspondence with the parents and students.
Honor code will have the location of school handbooks.
Virtual library is an online discussion forum where students can exchange their course ideas with each other.
School directory contains contact information of all the students.
Message board will display necessary and important information which is for every student. There can be rules and guidelines posted there so that every student reads it and abide by them.
How thick a layer would Earth form as it wraps around the neutron star’s surface is: 6.67 10⁻³ m.
<h3>Density of the Neutron star</h3>
Density
ρ = m / V
Where:
ρ= density
m = mass of the planet 5.98 10²⁴ km
V =volume of the spherical layer
Volume of a sphere
Volume = 4/3 π r³
Mass = 1.5 = 1.5 1,991 10³⁰
Mass= 2.99 10³⁰ kg
Density:
ρ = 2.99 10³⁰ / [4/3 π (10 10³)³]
ρ is = 7.13 10 17 kg / m³
V = 5.98 10²⁴ / 7.13 10¹⁷
V = 8,387 10⁶ m³
Thickness of the layer
V = 4π r² e
e = V / 4π r
e = 8,387 10⁶ / [4π (10 10³)²]
e = 6.67 10⁻³ m
Inconclusion how thick a layer would Earth form as it wraps around the neutron star’s surface is: 6.67 10⁻³ m.
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Pieces of organic matter that were once part of living organisms
