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3 years ago

Please help this will determine my grade so I beg help me out and my grade

Chemistry

2 answers:

Leni [432]3 years ago

8 0

The answer is C (checking emails your email on laptop computer using coffee shop WiFi
Step by step explanation:
Radio waves are used for communications radio waves are a type of electromagnetic radiation best known for their use in communication technologies
So you can’t communicate or use WiFi’s without radio waves.
Have a nice day.

Lelu [443]3 years ago

7 0

Answer:

C: checking your email

Explanation:

I believe that C would be impossible, as you cannot use wireless networks without radio waves

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The Top Thrill Dragster, a rollercoaster at Cedar Point in Ohio, soars through the air at 176ft/sec. How fast is this in mph?

scoray [572]

Answer:

120mph

Explanation:

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divide the speed value by 1.467

176 times 60 second in a minute times 60 minutes in an hour

than divide by 5280 the amount of feet in a mile

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3 years ago

How many atoms are in 4 Al2(SO3)3

scZoUnD [109]

There are 337.23 × 10²³ atoms in 4 moles of aluminum sulfite Al₂(SO₃)₃.

Explanation:

The questions ask how many atoms are in 4 moles of aluminum sulfite Al₂(SO₃)₃?

To answer this we use the Avogadro's number to devise the following reasoning:

if in 1 mole of Al₂(SO₃)₃ there are 14 × 6.022 × 10²³ atoms

then in 4 moles of Al₂(SO₃)₃ there are X atoms

X = (4 × 14 × 6.022 × 10²³) / 1 = 337.23 × 10²³ atoms

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Avogadro's number

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3 years ago

3. Following the ice age. what happened to the massive amount of plant matter that accumulated during

gregori [183]

Answer:

the ice age is I think 8 then happened to the massive amount of plant is 10 and thice time is ice fully glow because it is cold.

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3 years ago

What conditions are important in determining if it will rain or snow?

zhannawk [14.2K]

For snow to fall to the ground, the temperature must be cold both up in the clouds where snowflakes form, and down at ground level. If the air near ground level is too warm, the snow will melt on its way down, changing to rain or freezing rain. Moisture is needed to form clouds and precipitation.

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3 years ago

Read 2 more answers

The green light emitted by a stoplight has a wavelength of 525 nm. What is the frequency of this photon? (c = 3.00 × 10⁸ m/s).

Reil [10]

The frequency of this photon is 5.94 x $10^{14} H_{Z}$ .

Solution:

The speed of light has a value of approximately 3.00×108 m/s

The wavelength should have units of meters.

The frequency should have units of Hz or s−1. Hz is hertz or reciprocal seconds.

We know the value of the speed of light and we are given the wavelength. All we have to do is rearrange the equation to solve for the frequency:

v = c/λ

= 3.00× $10^{8}$ m/s/505× $10^{-9}$ m

= 5.94X $10^{14}$ s-1

= 5.94X $10^{14}$ Hz

Frequency describes the number of waves passing through a particular location at a particular time. A class interval frequency is the number of observations that occur in a particular predefined interval. So, for example, if 20 of her ages 5-9 appear in the survey's data, the interval 5-9 has a frequency of 20. The class interval endpoints are the lowest and highest possible values of the variable.

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1 year ago