Answer:
46.8 kg
Explanation:
Mass = (density)(volume)
= (1.3)(36)
<u>M</u><u>a</u><u>s</u><u>s</u><u> </u><u>=</u><u> </u><u>4</u><u>6</u><u>.</u><u>8</u><u> </u><u>k</u><u>g</u>
4) B) Speed = Distance/ time
5) C) By applying second law of newton " F = ma" we say that "15 = 12 × acceleration"
15/12= acceleration
acceleration = 1.25 m/s2
6) D) It will continue to accelerate to the right but at a slower rate because of the small force (F2) being applied from the right.
The characteristic of science that is best exemplified by the paragraph presented is "It is falsifiable and reproducible."
<h3>What is science?</h3>
Science can be mostly defined as a set of methods and principles that aim at objectively understanding and explaining the phenomena that occurs in the world.
These set of methods and principle lead to theories and laws that describe how a specific phenomenon occurs.
<h3>What does "It is falsifiable and reproducible"?</h3>
This is a basic principle that implies hypotheses about a specific phenomenon can be tested using experiments and this can lead to either the confirmation of the hypothesis or dispproved. Moreover, same experiments can be used and these will have similar results.
This principle matches the paragraph because the same experiment leads to same results. Moreover, previous ideas about a phenomenon were disproved.
Learn more about science in: brainly.com/question/12842883
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The electrostatic force between two charges Q1 and q is given by
where
ke is the Coulomb's constant
Q1 is the first charge
q is the second charge
r is the distance between the two charges
Re-arranging the formula, we have
and since we know the value of the force F, of the charge Q1 and the distance r between the two charges, we can calculate the value of q:
And since the force is attractive, the two charges must have opposite sign, so the charge q must have negative sign.
The answer is B-plus.
The object is accelerating to the right, and up.