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4 years ago

Pikes peak is a mountain in colorado. its height is 4301 m above sea level. what is its altitude in kilometers

1 answer:

7 0

Height and altitude have the same meaning.

Because 1 km = 10³ m, the altitude is
(4301 m)*(10⁻³ km/m) = 4.301 km

Answer: 4.301 km

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Answer:

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3 years ago

Charcoal appears black in color because it

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The intensity of a sound wave increases as the wave spreads out from the source of the sound. True or false

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Answer:False

Explanation:

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3 years ago

When an object such as a plastic comb is charged by rubbing it with a cloth, the net charge is typically a few microcoulombs. If

masya89 [10]

The concept required to solve this problem is quantization of charge.

First the number of electrons will be calculated and then the total mass of the charge.

With these data it will be possible to calculate the percentage of load in the mass.

$Q= ne$

Here Q is the charge, n is the number of electrons and e is the charge on the electron

$n = \frac{Q}{e}$

Replacing,

$n = \frac{4*10^{-6}C}{1.6*10^{-19}}$

$n = 2.5 * 10^{13}77$

According to the quantization of charge the charge is defined as product of the number of electron and the charge on the electron

The total mass of the charge is

$m= nm_e$

Here,

m = Mass of the charge

n = Number of electrons

$m_e$ = Mass of the electron

$\text{Percentage change} = \frac{nm_e}{M}*100$

Replacing we have

$\text{Percentage change} = \frac{(2.5*10^13)(9.1*10^{-28})}{33}*100$

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4 years ago

How many groups are in the modern periodic table? 12 18 22 24

Elan Coil [88]

Answer:

Explanation:

The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups.

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4 years ago

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