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Alisiya [41]
3 years ago
7

The train slows down at the railroad crossing. Is that acceleration, velocity, speed, of none of the above?​

Physics
1 answer:
Vlad [161]3 years ago
4 0

Answer:

none of the above

Explanation:

im pretty positive this is the answer tell me if i am wrong please

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The process by which green plants convert light energy from the sun into chemical energy and food for use is known as - blank-
Basile [38]

Answer:

Photosynthesis

Explanation:

This process occurs in presence of sunlight, water, minerals, chlorophyll in autotrophs

3 0
3 years ago
64 g of sulfur dioxide (SO2) contains 32 g of oxygen. Calculate how much sulfur it contains.
Ghella [55]
In sulfur dioxide, there are 2 oxygen atoms and 1 sulfur atom. As there are 32g of sulfur and 32g of oxygen, that would mean that each oxygen atom would weigh about 16g. Given that, the mass of a single sulfur atom is twice that of a single oxygen atom. 
5 0
3 years ago
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The sound intensity of a certain type of food processor in normally distributed with standard deviation of 2.9 decibels. If the
Maru [420]

Answer: (48.41,\ 52.19)

Explanation:

The confidence interval for population mean is given by :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n=9

Sample mean : \ovreline{x}=50.3\text{ decibels}

Standard deviation : \sigma=2.9\text{ decibels }

Significance level : \alpha=1-0.95=0.05

Critical value : z_{\alpha/2}=z_{0.025}=1.96

Now, the 95% confidence interval estimate of the (true, unknown) mean sound intensity of all food processors of this type :-

50.3\pm (1.96)\dfrac{2.9}{\sqrt{9}}\\\\\approx50.3\pm1.89\\\\=(50.3-1.89,\ 50.3+1.89)=(48.41,\ 52.19)

6 0
3 years ago
How much heat is absorbed by 60 g of copper when it is heated from 20°C to 80°C?
ira [324]

Answer:

1,836J

Explanation:

6 0
4 years ago
Lithium sodium potassium rubidium cesium and francium are the same column. Why are these elements in the same column in the peri
tamaranim1 [39]

They have the same number of electrons in their outermost shell

Explanation:

Lithium, sodium, potassium, rubidium, cesium and francium are in the same column on the periodic table because they have the same number of electrons in their outermost shell.

  • The periodic table is based on the precepts of the modern periodic law which states that "the properties of elements are a periodic function of their atomic number".
  • In the table elements having the same number of electrons in the outermost shell of their atoms are placed over one another in vertical columns.
  • Each of the resulting vertical column is known as a group or family.
  • The given elements belongs to the first family on the periodic table.
  • In this group, all the elements have just one electron in their outermost shell.

learn more:

Periodic table brainly.com/question/5090516

#learnwithBrainly

4 0
3 years ago
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