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Svetach [21]
3 years ago
12

Which of the following is a good scientific question? A. Are dragons lizards or birds? B. How do star fish fall in love? C. Does

eating less fat increase a mouse's life span? D. Why do crickets chirp?
Physics
2 answers:
Wittaler [7]3 years ago
6 0
<span>C. Does eating less fat increase a mouse's lifespan?
(If a mouse eats less fat in its meals then will it live longer: compared to other mice lives.

</span>This is a testable question that can be answered by designing and conducting an experiment.

I think D could be correct as well.

My final answer is D.


il63 [147K]3 years ago
4 0

Answer:

its C. Does eating less fat increase a mouse's life span?

Explanation:A scientific question cannot be asked about something that does not exist, so the question about dragons is out. Similarly, starfish do not fall in love as far as we know, nor would we have a reliable way of measuring how they did. The cricket question asks only "why?" and lists no variables. The only question left is "Does eating less fat increase a mouse's life span?" This question can be answered by giving different mice various diets and seeing how long they live.

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An object 82 cm high forms a virtual image 4.1 cm high located 4.6 cm behind a mirror. Find the object distance.
ioda

Answer:

The object distance is 92 cm.  

Explanation:

let v be the image distance and h be the height of the image, let u the be the object distance and H be the height of the object.

then, the magification of the mirror is given by:

m = -v/u and m = h/H

so, -v/u = h/H

         u = -v×H/h

            = -(-4.6)×(82)/(4.1)

            = 92 cm

Therefore, the object distance is 92 cm.

8 0
3 years ago
A motorcyclist is moving 24.5 m/s
anastassius [24]

Answer:962 hz

Explanation: got it right on acellus

8 0
3 years ago
What does the phrase "1 meter per second per second" means? A. The velocity of an object can increase by 1 meter per second, for
OLga [1]

Explanation:

"1 meter per second per second" means acceleration of an object. It is equal to the rate of change of velocity. Its SI unit is m/s^2.

It is simply given by :

a=\dfrac{dv}{dt}

dv is change in velocity

dt is small interval of time

"1 meter per second per second" means that the velocity of an object can increase by 1 meter per second.

4 0
3 years ago
Some solids exist in his regular structure known as a lattice true or false ​
aleksklad [387]

Answer:

B.) The cake rises as gas bubbles form in the baking cake.

Explanation:

I got A on the quiz

7 0
3 years ago
Protons and Electrons attract each other because they are oppositely charged. Protons are positively charged, and electrons are
sashaice [31]

Answer:

True, protons are positively charged, while electrons are negatively charged, therefore they attract each other.

Explanation:

4 0
3 years ago
Read 2 more answers
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