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Gennadij [26K]
3 years ago
6

Often, waves are said to be "out of phase" with one another. This means that one wave is shifted so that the peaks and troughs a

re not simultaneous. Which type of interference could be seen as "out of phase"?
A) positive

B) negative
Physics
2 answers:
grandymaker [24]3 years ago
8 0
I believe the correct answer is “negative” ?? Not sure but I think
snow_lady [41]3 years ago
8 0

Answer: It’s Negative

Explanation: Just did it on USA test prep

When two waves come close to one another, their effects add together. ... In fact, if the two waves (with the same amplitude) are shifted by exactly half a wavelength ... The resulting combined wave will have no crests or troughs at all, and will ... That means that there will always be constructive interference at that spot, therefore its negative.

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What property do the following elements have in common? sulfur, iodine, and magnesium A) Same phase at room temperature. B) Good
kolbaska11 [484]
Sulphur (S), Iodine (I) and Magnesium (Mg) are all three, solids at the room temperature. Thus they have the same phase at room temperature. 
Sulphur and Iodine are not good conductors of electricity.
Also while Sulphur is in group 6, Magnesium is in group 2. Therefore they do not have the same number of valence electrons. Sulphur is making anions (negative ions) and Magnesium is making cations (positive ions).
7 0
3 years ago
Read 2 more answers
10) Um viajante, ao desembarcar no aeroporto de Londres, observou que o valor da temperatura do ambiente na escala Fahrenheit é
joja [24]

Answer:

The observed temperature was 10º Celsius or 50º Fahrenheit.

Explanation:

The traveler observed that the temperature in Fahrenheit is five times the value of the temperature in Celsius, therefore:

F = 5*C

A Fahrenheit temperature relates to a Celsius one by the following expression:

F = \frac{9}{5}*C + 32

Using the second expression on the first, we can solve for the temperature in Celsius, this is done below:

\frac{9}{5}*C + 32 = 5*C\\\frac{9}{5}*C - 5*C = -32\\\frac{9*C - 25*C}{5} = -32\\\frac{-16*C}{5} = -32\\-16*C = -32*5\\-16*C = -160\\C = \frac{-160}{-16} = 10\º\text{C}\\F = 5*C = 5*10 = 50\º\text{F}

The observed temperature was 10º Celsius or 50º Fahrenheit.

7 0
3 years ago
a graduated cylinder contains 60 ml of water. A rock is added and the water level rises to 90 ml. if the rock has a mass of 0.6k
Margarita [4]

Answer:

20g/ml

Explanation:

the mass must be in gram and 90-60 =30

so 600g/30ml =20g/ml

3 0
2 years ago
Hi so this is 15 points :D
mario62 [17]

Answer:

A. The core makes up the majority of Earth's volume.

Explanation:

Although the core and mantle are about equal in thickness, the core actually forms only 15% of earth's volume whereas the mantle takes up 84%

8 0
2 years ago
In which of the following situation is work being done?
Afina-wow [57]

A wagon is pulled at an angle of 30 degrees to the horizontal.

6 0
3 years ago
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