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AlexFokin [52]
4 years ago
11

An experiment was designed to investigate the effect of caffeine on the heartbeat of the fleas. 2 populations of water fleas wer

e cultured. Both populations had water with the same mineral content, were supplied with identical amounts of bacteria as food, received the same of light, and had their temperature maintained at 20 degree c. Every 2 hours, water fleas from both populations were selected and their heartbeats were monitored. The fleas of pop.. 1 had caffeine administered 5 min.. before their heartbeats were checked. The fleas pop.. was given nothing. Match: 10. what part of the experiment was food? 11. What part of experiment was the heartbeat? 12. what part of experiment was the h2o temp.? 13. what part of the experiment was pop..2? 14. what part of experiment was caffeine? A. independent variable B. dependent variable C. constant D. control
Physics
1 answer:
weeeeeb [17]4 years ago
8 0
<span>10. what part of the experiment was food? C. CONSTANT
11. What part of experiment was the heartbeat? B. DEPENDENT VARIABLE
12. what part of experiment was the h2o temp.? C. CONSTANT
13. what part of the experiment was pop..2? D. CONTROL 
14. what part of experiment was caffeine? A. INDEPENDENT VARIABLE

Constant are those items that have been applied consistently w/o change.
Dependent variable are variables that change due to the application of independent variable.
Control is the basis of the experiment. It is what the result of the experiment is compared to, to check whether there are changes or not.</span>
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The emt must assume that any unwitnessed water-related incident is accompanied by:________
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3 0
2 years ago
A ball is thrown upward at a 45° angle. Inthe absence of air resistance, the ballfollows aA. tangential curve.B. sine curve.C. p
Evgesh-ka [11]

As ball is projected up in air at an angle of 45 degree without any air resistance

Let the initial speed will be v

now we will have

In x direction

v_x = v cos45

in y direction

v_y = vsin45

now displacement in x direction

x = (vcos45)t + 0

displacement in y direction

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now from above two equations we have

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8 0
3 years ago
Is water wet my friends have been arguing about this for about 3 months now but now it is time to hear other people
nirvana33 [79]
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8 0
3 years ago
Read 2 more answers
An observer on Earth sees rocket 1 leave Earth and travel toward Planet X at 0.3c. The observer on Earth also sees that Planet X
Verizon [17]

Answer:

0.625 c

Explanation:

Relative speed of a body may be defined as the speed of one body with respect to some other or the speed of one body in comparison to the speed of second body.

In the context,

The relative speed of body 2 with respect to body 1 can be expressed as :

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Therefore, the speed of rocket 1 according to an observer on rocket 2 is 0.625 c

5 0
3 years ago
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