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vovangra [49]
3 years ago
5

Question 2 (2 points) Question 2 Unsaved Why does a blue shirt look blue? Choose the BEST explanation. Question 2 options: All w

avelengths of light are absorbed by the shirt. The shirt absorbs the blue wavelengths. The shirt reflects all wavelengths of light. The shirt reflects the blue wavelengths. Question 3 (2 points) Question 3 Unsaved Why is charcoal black? Question 3 options: Charcoal absorbs all wavelengths of light that fall on it. Charcoal reflects black-colored light. Charcoal reflects all wavelengths of light that fall on it. Charcoal has a black-colored pigment. Question 4 (2 points) Question 4 Unsaved Which color has the longest wavelength? Question 4 options: Blue Red Purple Yellow Question 5 (2 points) Question 5 Unsaved Which color has the highest frequency? Question 5 options: Yellow Purple Blue Red Question 6 (2 points) Question 6 Unsaved If white light shines on an object and the red, orange, green, blue, indigo, and violet light is absorbed. What color does your eye see? (hint: see what color is missing) Question 6 options: White Red Purple Yellow Question 7 (2 points) Question 7 Unsaved Which statement is TRUE about white light? Question 7 options: It makes all objects appear white. It can be seen when all colors are absorbed. It contains all of the waves of the electromagnetic spectrum. It contains all of the wavelengths of the visible light spectrum.
Chemistry
1 answer:
Mazyrski [523]3 years ago
5 0
1 . Each color has a different wavelength allowing the eye to see it.2 . The shirt reflects the blue wavelengths.
3 . Charcoal absorbs all wavelengths of light that fall on it4 . Red
5 . Purple 6 . Yellow7 . It contains all of the wavelengths of the visible light spectrum.
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The length of time required for half of the radioactive atoms in a sample to decay is its. A. half-life. . B. relative date. . C
Kobotan [32]
The length of time required for half of the radioactive atoms in a sample to decay is its <span>half-life. The correct option among all the options that are given in the question is the first option or option "A". The other choices are incorrect and can be easily neglected. I hope that this is the answer that has come to your help.</span>
8 0
3 years ago
Please help me outttt
leonid [27]

Answer:

4.) 9, 1, and 4    5.) 4, 1, and 4

Explanation:

I am not quite sure about this because I cannot remember if the coefficient (the number before the elements) is applied to every element in the compound. If it is then your number of atoms are as follows: CORRECTION: you do not have to apply the coefficient to every element only the one that is after it. So when you back and fix the error your number of atoms will be as follows:

number 4

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you can calculate the number of atoms present in this compound by multiplying the coefficient and the subscripts of each atom.

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7 0
3 years ago
A car traveling at a constant speed travels 175 miles in four hours. How many minutes will it take for the car to travel 1000 fe
elena-14-01-66 [18.8K]

It takes 0.26 minutes to travel 1000 feet

<u>Solution:</u>

Given that car traveling at a constant speed travels 175 miles in four hours

Distance = 175 miles

Time taken = 4 hours

Convert the units to feet and minute

Given that,

1 mile = 5280 feet

175 miles = 5280 x 175 feet = 918720 feet

Also we know that,

1 hour = 60 minutes

4 hours = 60 x 4 minutes = 240 minutes

Thus, we got,

Distance = 918720 feet

Time taken = 240 minutes

<em><u>Find the speed of car</u></em>

<em><u>Speed is given by formula:</u></em>

speed = \frac{distance}{time}

speed = \frac{918720}{240} = 3828

Thus speed of car is 3828 feet per minute

<em><u>How many minutes will it take for the car to travel 1000 feet?</u></em>

Let "x" be the minutes needed for 1000 feet

speed of car is 3828 feet per minute

1 minute = 3828 feet

x minute = 1000 feet

This forms a proportion. We can solve by cross multiplying

x \times 3828 = 1000 \times 1\\\\x = \frac{1000}{3828}\\\\x = 0.26

Thus it takes 0.26 minutes to travel 1000 feet

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Which of the following statements is true?
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