1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lesechka [4]
4 years ago
12

Explain negative and positive acceleration ?

Chemistry
1 answer:
Elenna [48]4 years ago
8 0
Acceleration is a vector(magnitude and direction). On a graph, negative and positive is just representing its direction.
You might be interested in
How does the structure of a carbon atom enable it to form large molecules
zlopas [31]
Carbon is the only element that can form so many different compounds because each carbon atom can form four chemical bonds to other atoms ,and because the carbon atom is just the right ,small size to fit in comfortably as parts of a very large molecules.
3 0
3 years ago
Read 2 more answers
The first-order decay of radon has a half-life of 3.823 days. How many grams of radon decomposes after 5.55 days if the sample i
Leni [432]

Answer:

The mass of radon that decompose = 63. 4 g

Explanation:

R.R = P.E/(2ᵇ/ⁿ)

Where R.R = radioactive remain, P.E = parent element, b = Time, n = half life.

Where P.E = 100 g , b = 5.55 days, n = 3.823 days.

∴ R.R = 100/2^{5.55/3.823}

  R.R = 100/2^{1.45}

  R.R = 100/2.73

  R.R = 36.63 g.

The mass of radon that decompose = Initial mass of radon - Remaining mass of radon after radioactivity.

Mass of radon that decompose = 100 - 36.63

= 63.37 ≈ 63.4 g

The mass of radon that decompose = 63. 4 g

8 0
3 years ago
Why is it important to perform the reagent tests last?
leonid [27]
<span>Spontaneous reactions need to be discovered first. Also, if reagents are transferred to the other cups used in the tests, it could contaminate them, leading to different colors being seen and the test results being invalid. Doing the reagent tests last ensure that the cups and reagents are only used on the substances that they are intended to.</span>
8 0
3 years ago
True or False?<br><br> Weak bases dissociate<br> completely into (OH)- and<br> metal cations.
ki77a [65]

Answer:

False

Explanation:

When weak bases dissociate, an equilibrium is established rather than dissociating 100%. So OH- and metal ions are partially ionized.

7 0
3 years ago
Where are cardiac muscles used? Are they voluntary?
Ghella [55]

Answer:

Heart

Not voluntary.

Explanation:

The heart is made up of special muscle called the cardiac muscle that contains interconnected muscle fibres which are supplied with blood through the coronary artery. Also so that the waves of contraction can travel throughout the mass of the muscle.

6 0
3 years ago
Read 2 more answers
Other questions:
  • If 22.5 L of nitrogen at 748 mm Hg are compressed to 725 mm Hg at a constant temperature. What is the new volume​
    10·1 answer
  • I WILL MARK BRAINLIEST
    12·1 answer
  • Metals are really good thermal conductors for which of the following reasons? Select all that apply. Metals are really good ther
    8·2 answers
  • Identify the products formed in the net reaction of the electrolysis of water.
    14·2 answers
  • Define activation energy
    9·1 answer
  • Which of the following is an example of matter?
    8·2 answers
  • What's a word for the definition of a straight path an object can move along
    12·1 answer
  • Which of the following are part of the Carbon Cycle? A. respiration B. combustion C. photosynthesis D. decomposition E. all of t
    13·1 answer
  • Which element has fewer than four dots in its electron dot diagrams?
    7·2 answers
  • 4) What is the density of a metal block that has a mass of 270 grams and has a length of 5 cm, width of 3
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!