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uysha [10]
3 years ago
7

Will mark as brainlist for only correct answer

Physics
1 answer:
Crank3 years ago
4 0

Answer:

low, low

Explanation:

Longer wavelengths will have lower frequencies, and shorter wavelengths will have higher frequencies.

Large amplitude waves contain more energy. The other is frequency, which is the number of waves that pass by each second. If more waves( or more wiggly lines)  pass by, more energy is transferred each second

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Most of the earth,s surface is covered by what ?
GenaCL600 [577]
Around 70-72% of earth’s surface is covered in water (most of it is salt water).
Hope this helps.
4 0
3 years ago
what is similar about elements in the same group on the periodic table? A) atomic masses B) atomic numbers C) chemical propertie
ArbitrLikvidat [17]

Answer:

D) Number of electrons.

Explanation:

Elements in the same group on the periodic table has the same number of electrons. These electrons are those involved in  bonding with other atoms to form compounds.

3 0
3 years ago
When is the ideal time to take a resting heart rate? O A. After exercise OB. After a meal OC. Hirst thing in the morning D. Befo
stira [4]

Answer:

D

Explanation:

7 0
3 years ago
What is stellar parallax?a.It describes the fact that stars are actually moving relative to one another, even though to our eyes
bagirrra123 [75]

Answer:

Option C

C. It is the slight back-and-forth shifting of star positions that occurs as we view the stars from different positions in Earth's orbit of the Sun.

Explanation:

The angle due to the change in position of a nearby object against the background stars it is known as parallax.          

The parallax angle can be used to find out the distance by means of triangulation. Making a triangle between the nearby star, the Sun and the Earth(as is shown in the image below), knowing that the distance between the Earth and the Sun (150000000 Km) is defined as 1 astronomical unit.

d(pc) = \frac{1}{p('')}  (1)

Equation (1) represents the distance in a unit known as parsec (pc).

Key terms:

Parsec: Parallax of arc second      

3 0
3 years ago
A window washer on a hanging platform cleans the outside of windows on a skyscraper. The washer hoists the platform up the side
forsale [732]

Answer:

Acceleration of the platform = - 1.8 m/s²

Explanation:

The net force acting on a body accelerates the body in the same direction as that in which the resultant is applied.

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ma = 800 - mg

100a = 800 - 100×9.8

100a = - 180

100a = - 180

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This means the body falls downwards.

6 0
3 years ago
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