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Novay_Z [31]
3 years ago
9

Which of the following hypotheses is both falsifiable and testable?

Physics
2 answers:
rosijanka [135]3 years ago
5 0
B. If all plants are watered at least once a day then they will all grow at least 1 cm a day.

All plants grow at different rates.

Hope this helps! XD
Vladimir [108]3 years ago
5 0

Answer:

The correct answer to the question: Which of the following hypotheses is both falsifiable and testable:____, would be, B: If all plants are watered at least once a day then they will all grow at least 1 cm a day.

Explanation:

In order to carry out research, hypothesis must be generated that will ask the questions necessary to find out information on different topics. However, not all questions, or statements will serve as a source for research, or lead to research. For this to happen, a researched must know that there are conditions to how to formulate a hypothesis; the first condition is that the hypothesis must be verifiable, or testable, which means, it can be proven. The second is, that the hypothesis must be falsifiable, or refutable, by research, and the third, the hypothesis must lead to results that can lead to further testing and reproduction. In this case, saying that all plants, when watered once a day at least, will grow a minimum of 1 cm a day cannot be used because it is based on a wrong assumption, given that all plants grow at different rates, and not all can be watered in the same way. This, in itself, from the outset, invalidates the hypothesis.

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A piece of nickel at 25 °C is dropped into a glass of water at 25 °C. Which statement is correct?
Makovka662 [10]
The answer is C the temp of water in both beakers will decrease since the metal is flowing heat into the water. Therefore we can say the metal losses heat and the water gains the heat lost by the metal minus any heat loss to surroundings! Hope this explanation helps you understand the concept! Please rate if I helped you! Thank you so much!
5 0
3 years ago
We use towels to dry our body after taking a shower,why?<br><br>​
9966 [12]

Answer:

A wet body has a relatively high concentration of water. When this is transferred to a towel, the large surface area of the towel fabric distributes the water molecules over a much greater surface area, so the relative concentration is lower.

3 0
2 years ago
A jogger hears a car alarm and decides to investigate. While running toward the car, she hears an alarm frequency of 872.10 Hz.
Nata [24]

Answer:

v = 4.18 m/s

Explanation:

given,

frequency of the alarm = 872.10 Hz

after passing car frequency she hear = 851.10 Hz

Speed of sound = 343 m/s

speed of the jogger = ?

speed of the

v_f = \dfrac{872.10-851.10}{2}

v_f =10.5\ Hz

v_o = 872.1 - 10.5

V_0 = 861.6\ Hz

The speed of jogger

v = \dfrac{v_1 \times 343}{v_0}-343

v = \dfrac{872.1 \times 343}{861.6}-343

v = 4.18 m/s

5 0
2 years ago
That which flows on uniformly, of which a day is a logical portion, is called time. True or False
mr_godi [17]
The answer to the statement is true because the day is of the logical proportion it has to be time.
3 0
3 years ago
Read 2 more answers
8. Three grams of Bismuth-218 decay to 0.375 grams in one hour. What is the half-
Evgen [1.6K]

Answer: 0.333 h

Explanation:

This problem can be solved using the <u>Radioactive Half Life Formula</u>:  

A=A_{o}.2^{\frac{-t}{H}} (1)  

Where:  

A=0.375 g is the final amount of the material  

A_{o}=3 g is the initial amount of the material  

t=1 h is the time elapsed  

H is the half life of the material (the quantity we are asked to find)  

Knowing this, let's substitute the values and find h from (1):

0.375 g=(3 g)2^{\frac{-1h}{H}} (2)  

\frac{0.375 g}{3 g}=2^{\frac{-1h}{H}} (3)  

Applying natural logarithm in both sides:

ln(\frac{0.375 g}{3 g})=ln(2^{\frac{-1 h}{H}}) (4)  

-2.079=-\frac{1 h}{H}ln(2) (5)  

Clearing H:

H=\frac{-1h}{-2.079}(0.693) (6)  

Finally:

h=0.333 h This is the half-life of the Bismuth-218 isotope

4 0
3 years ago
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