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Vlad1618 [11]
3 years ago
8

Why do scientists make a hypothesis before an experiment

Biology
1 answer:
Ugo [173]3 years ago
5 0

Answer:

Scientists make a hypothesis before an experiment so the can make an educated guess of the outcome before they get one.

Explanation:

The hypothesis is important because it allows scientists to make predictions about the upcomming experiment and then analyze the data after the experiment.

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A measurement must include both a number and a(an) _______.
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Answer an unit of measurement.
For example: inch, hour, minutes, feet, meters.
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The diagram shows a simple lipid.
Evgesh-ka [11]

The correct answer is option A, that is, saturated.

The mentioned lipid is not a phospholipid, as it does not comprise a phosphate group at the terminal of the chain, and is not a triglyceride due to the absence of glycerol moiety.

Each carbon combined with the hydrogens forms the maximum number of possible C-H bonds, thus, there are no multiple bonds between the carbons. Hence, it can be concluded that the lipid is saturated.


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3 years ago
In which structure of the female reproductive system is a zygote typically found?
Karo-lina-s [1.5K]
The answer is A. Fallopian Tube. The ovaries create the egg and the fallopian tubes hold the zygote until it is fertilized, then transfer it to the uterus.
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3 years ago
Alone in the woods, Pedro hears a noise. He thinks he sees a bear coming toward him. His heart starts pounding and then, a momen
pishuonlain [190]
<h2>Cannon -Bard theory</h2>

Explanation:

  • Alone in the woods, Pedro hears a noise. He thinks he sees a bear coming toward him. His heart starts pounding and then, a moment later, he realizes how frightened he is. This sequence of events is BEST explained by the <u>Cannon-Bard t</u>heory of emotion.

According to Cannon-Bard theory, all the emotional expressions occur due to the stimulation of hypothalamic structures present in brain. This theory also states that feeling and physiological effects of an emotional stimuli occurs simultaneously.

Here, James thinks that a bear is coming, this is a stimulus. His heart starts pounding that is the physiological effect of the stimulus and the next moment he feels frightened which is a feeling.

So we conclude that in this case, the physiological effect and feeling of emotion occurred simultaneously. So these sequence of events is best explained  by Cannon-Bard's theory.

3 0
3 years ago
Read 2 more answers
Why is the back-work ratio much higher in the brayton cycle than in the rankine cycle?
Ivanshal [37]

The back-work ratio much higher in the brayton cycle than in the rankine cycle because a gas cycle is the Brayton cycle, while a steam cycle is the Rankine cycle. Particularly, the creation of water droplets will be a constraint on the steam turbine's efficiency. Since gas has a bigger specific volume than steam, the compressor will have to work harder while using gas.

Recall the steady flow device's shaft work expression.

W =-∫ V dP +...

As it is in the pump (liquid) compared to turbine (superheated vapor) in the Rankine cycle, the specific volume in the compressor is not significantly less than the specific volume in the turbine in the Brayton cycle.

A thermodynamic cycle that transforms heat into mechanical energy is the Rankine cycle, often known as the Rankine vapor cycle.

The operation of various heat engines that use air or another gas as their working fluid is described by the Brayton cycle, a thermodynamic cycle.

Learn more about Rankine cycle here brainly.com/question/24050955

#SPJ4

3 0
1 year ago
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