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Alex73 [517]
3 years ago
15

What is an isotope?

Chemistry
2 answers:
Marysya12 [62]3 years ago
5 0

Answer:

C: Atoms of the same element that have similar chemical properties but have different  numbers of neutrons

<u><em>Could I please have BRAINLIEST.</em></u>

<u><em /></u>

Usimov [2.4K]3 years ago
4 0

Answer: C.

Explanation:

They are the same elements that contain same number of protons, but different numbers of neutrons.

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Which of the following is true about the offspring of an organism X that reproduces asexually?
Mekhanik [1.2K]
It would be that "the offspring would have identical DNA to X. When an organism reproduces asexually, it creates an exact copy of its genetic material to pass on to its offspring.


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Differences between hypothesis and theory​
Sphinxa [80]

Answer:

A hypothesis is either a suggested explanation for an observable phenomenon, or a reasoned prediction of a possible causal correlation among multiple phenomena. In science, a theory is a tested, well-substantiated, unifying explanation for a set of verified, proven factors.

Explanation:

He I hope this helps and hope I can brainliest answer

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A particle of mass 2.0 kg moves under the influence of the force F(x)=(-5x^2+7x)~\text{N}F(x)=(−5x ​2 ​​ +7x) N. If its speed at
Brums [2.3K]

Answer:

The speed of the particle at x = 4.0 m is 13.66 m/s

Explanation:

The work done by this force between the two points above is given by

W = ∫ F dx

W = ∫⁴₋₄ (-5x² + 7x) dx

W = [(-5x³/3) + (7x²/2)]⁴₋₄

W = [(-5(4³)/3) + (7(4²)/2)] - [(-5(-4)³)/3) + (7((-4)²)/2)] = (-50.6667) - (162.6667) = (- 213.33 J)

Kinetic energy at -4.0 m

At this point, v = 20 m/s

K.E = mv²/2 = 2 × 20²/2 = 400 J

To obtain the kinetic energy at 4 m,

We apply the work-energy theorem which mathematically translates to

The work done in moving a particle from one point to another = Change in kinetic energy of the particle between those two points

W = ΔK.E

Work done between x = - 4m and x = 4 m is - 213.33 J

Hence, ΔK.E = -213.33 J

Change in kinetic energy of the particle between x = - 4m and x = 4m is ΔK.E

ΔK.E = (Kinetic energy at x = 4m) - (kinetic energy at x = - 4m)

- 213.33 J = (mv²/2) - 400

mv²/2 = -213.33 + 400 = 186.67 J

2v² = 2 × 186.67

v² = 186.67

v = 13.66 m/s.

5 0
3 years ago
How many meters do you cover in a 10-kilometer (10-K) race?
attashe74 [19]

Answer:

100

Explanation:

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Science always begins with what?
tiny-mole [99]

Step 7- Communicate. Present/share your results. Replicate.

Step 1- Question.

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Step 4-Experiment.

Step 5-Observations.

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3 years ago
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