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3 years ago

A precaution for heat transfer lab

SAT

1 answer:

Schach [20]3 years ago

4 0

Answer:

Safety precautions in the heat transfer laboratory depend on the equipment that you will use.

Explanation:

The safety measures or precautions that an experimenter needs to bear in mind depends on the types of equipment he/she's using in experimenting. But, there are general precautions to consider.

There are three different ways to transfer heat, including convection, conduction, and radiation. <em><u>Convection</u></em><u> </u>pertains to the heat transfer between liquid or gas molecules moving circularly. Through that, their temperature and density are both affected. <em><u>Conduction</u></em><em> </em>and radiation are polarities. The heat transfer happened when two objects touched one another in conduction. On the other hand, <em><u>radiation</u></em> occurs when two objects do not touch each other.

Generally, precautions in performing these three experiments include the following:

Careful handling of glassware to avoid cracking or breaking it.
Avoid spilling the liquid or any content of the glassware.
Do not touch any hot object.
Use a hot pad to transfer hot objects from different places.

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Of the $10$ kids in a chess club, $5$ are left-handed and $5$ are right-handed. the club holds a round-robin tournament in which

Nataliya [291]

The total number of games a girl play against a boy is 25, the number of games a girl plays against a boy is 10, the fraction of the games are boy-versus-boy is 2/9, and 1/5 is the fraction of all games at the tournament Anita plays.

<h3>How to carry out Permutation and Combination?</h3>

We are given that there are 5 girls and 5 boys in a chess club.

Thus, total games that girls play against a boy = 5×5 = 25

The number of games a girl play against another is the total number of games = 10

The number of games that are boy vs boy = 10

The number of games Boy vs Boy + Girl vs Girl + Boy vs Girl = 10 + 10 + 25 = 45

Fraction of the games that are boy vs boy = 10/45 = 2/9

If Anita is one of the club members, then Anita will have to play against 9 people at the tournament.

Total number of games = 45

Then the fraction of all games at the tournament Anita play the game.= 9/45 ⇒ 1/5

Thus, the total number of games a girl play against a boy is 25, the number of games a girl plays against a boy is 10, the fraction of the games are boy-versus-boy is 2/9, and 1/5 fraction of all games at the tournament Anita plays.

Read more about Permutation and Combination at; brainly.com/question/4658834

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2 years ago

Bill wants to run a total of 4,000 meters in 5 days. The table shows how far he runs each day for 4 days. Each lap is 400 meters

Lena [83]

2 laps everyday explanation:800•5=4000

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2 years ago

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Discuss the fundamental epistemological debates concerning the source of human knowledge?

Illusion [34]

Answer:

All knowledge is learned through the senses, perceptions.

Some knowledge is learned by personal experience, personal perception, some knowledge can be learned by reading about the experiences of others.

There is no knowledge that is not learned by either (a) personal experience, perception, or (b) by learning from the experiences and perceptions of others.

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Who knows someone named Katie because she deleted my question then said you've been warned

evablogger [386]

she did it to me to sadly.

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The professor informs the class that there will be a test next week. what is the probability that a randomly selected student st

marusya05 [52]

The probability that students who were randomly selected studied for the test, if they pass it with a B or higher grade is: D. 0.80.

<h3>How to calculate the probability?</h3>

In this exercise, you're required to determine the probability that students who were randomly selected studied for the test, if they pass it with a B or higher grade. Thus, we would apply Bayes's theorem.

Let S represent studied for.

Let B represent a score of B or higher grade

Therefore, we need to find P(S|B):

$S|B = \frac{B|S \times S}{B|S \times S\; +\; B|S' \times S'} \\\\S|B = \frac{0.55 \times 0.6}{0.55 \times 0.6 \;+ \;0.2 \times 0.4}\\\\S|B =\frac{0.33}{0.33 + 0.08} \\\\S|B =\frac{0.33}{0.41}$

S|B = 0.80.

Read more on probability here: brainly.com/question/25870256

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<u>Complete Question:</u>

At the beginning of the semester, a professor tells students that if they study for the tests, then there is a 55% chance they will get a B or higher on the tests. If they do not study, there is a 20% chance that they will get a B or higher on the tests. The professor knows from prior surveys that 60% of students study for the tests. The probabilities are displayed in the tree diagram.

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