Asteroid: is a large rocky body in space, in orbit around the Sun. Meteoroid: is a much smaller rocks or particles in orbit around the Sun, therefore I'd say B.
The distance of the object from the mirror is 3cm.
To calculate the distance of the object from the mirror, we make use of the mirror formula
<h3>Mirror formula</h3>
- 1/f = (1/u)+(1/v)............ Equation 1
Where:
- f = Focal length of the mirror
- v = image distance
- u = object distance.
Using the real is positive convention,
Given:
Substitute these values into equation 1 and solve for u
- 1/5 = (-1/10)+(1/u)
- 1/5+(1/10) = 1/u
- 1/u = (2+1)/10
- 1/u = 3/10
- u = 10/3
- u = 3.33
- u = 3 cm
Hence, The distance of the object from the mirror is 3cm.
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The option that best describes how the teacher likely came to this conclusion is that:
- The teacher conducted an observational study by comparing the performance on the test of those who completed their review worksheets to those who did not complete their review worksheets.
<h3>What is observational study?</h3>
An observational study is known to be a kind of study where a researcher do observes the subjects without having any form of interference with them.
Here, the researcher is said to have no control over any of the treatments that is used on the subjects. All the have to do is observe and record their findings.
See options below
A. The teacher conducted an observational study by comparing the performance on the test of those who completed their review worksheets to those who did not complete their review worksheets.
B. The teacher conducted a sample survey by asking students if they completed their review worksheets and if they think they did well on the test.
C. The teacher performed a controlled experiment in which one group of students decided not to complete their review worksheets and the other group decided to complete their review worksheets.
D. The teacher performed a random experiment in which the test scores of one group of students would be higher and the test scores of the other group would be lower.
Learn more about worksheets from
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Based on an evaluation of the given observation, the correct statement is: C. This is a software keylogger attack, as screenshots, video captures, and keystrokes have been routinely monitored and periodically shared.
<h3>What is a keylogger?</h3>
A keylogger is defined as a keystroke logger or even a keyboard capture that is an activity-monitoring software designed and developed to monitor, record and share a user's personal data with a cyber attacker or hacker.
In Cybersecurity, there are two main types of keyloggers which are;
In this question, a software keylogger is the one that was used in the attack because screenshots, email ids and passwords, video captures, and keystrokes were routinely monitored and periodically shared with the attacker.
Read more about Keylogger at; brainly.com/question/26343454
