Answer:
7
g/cm³
Explanation:
The formula for density is
. Let's apply the formula to the question:
= 7
g/cm³
Answer:
2.92682 m

250000000000 Hz

0.21126 m
0.12244 m
Explanation:
c = Speed of light = 
= Wavelength
f = Frequency
Wavelength is given by

The wavelength is 2.92682 m
Frequency is given by

The frequency is 

The frequency is 250000000000 Hz

The wavelength is 

The wavelength is 0.21126 m

The wavelength is 0.12244 m
Answer: Option A) Atoms to the left on the periodic table
Explanation:
The periodic table has metallic elements on the left side, semi-metal or metalloids in the middle, and nonmetallic elements of the right side.
Since, electronegativity of an atom tells of its power to attract electrons. Metals give off electrons rather than attract electrons like non-metals; thus, metals have the lowest electronegativity (with values less than 2.4 while nonmetal have high electronegativity values above 2.7
Infact, the element with the highest electronegativity is a non-metal (fluorine) while the element with the lowest electronegativity is a metal (potassium)
Thus, metallic atoms located on the left side of the periodic table have the lowest electronegativity
Answer:
The pressure at the narrower region reduces to 4.00 kPa
Explanation:
According to Bernoulli's theorem for an ideal fluid we have we have

Applying this between the two sections under consideration we obtain

Now by equation of contuinity we have


Applying values in the bernoulli's equation and noting that
we get
