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Stolb23 [73]
3 years ago
8

2. Kevin is a member of the school's track and field team. His favorite event is throwing the shot

Physics
1 answer:
Tju [1.3M]3 years ago
7 0

Answer:

F=ma

165/28.5=57.89kg

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how does the location of semiconductors on the periodic table differ from the locations of other element families​
Mekhanik [1.2K]

Answer:

Semi conductors are part of the fourth group in periodic table.

Explanation:

Periodic table is the arrangement of chemical elements on the basis of their atomic number. So all the elements with  respective valence electrons are placed in thir respective groups. . All the elements with valence electrons four are placed in the fourth group .Semi conductors is the common name given to the elements of 4th group. These elements dont have the tendency to either donate or accept.

The group 3 elements have three electrons in their valence shell and  hence have a tendency to donate. Whereas the group 5 elements having five valence electrons accept to satisfy thir octet. The semi conductors exist between 3rd and 5th groups exhibiting different properties according to the temperatures and excitations provided.

3 0
3 years ago
Infrared radiation from young stars can pass through the heavy dust clouds surrounding them, allowing astronomers here on Earth
liberstina [14]

Answer:

λ = 1.86 x 10⁻⁴ m = 186 μm

Explanation:

The relationship between the wavelength and the frequency of a wave is given by the following equation:

c = f\lambda\\\\\lambda = \frac{c}{f}

where,

λ = wavelength of infrared radiation = ?

c = speed of infrared radiation = speed of light = 3 x 10⁸ m/s

f = frequency of infrared radiation = 1.61 THz = 1.61 x 10¹² Hz

Therefore,

\lambda = \frac{3\ x\ 10^8\ m/s}{1.61\ x\ 10^{12}\ Hz}

<u>λ = 1.86 x 10⁻⁴ m = 186 μm</u>

7 0
3 years ago
which of the following is not a property of an acid? reacts with metals bitter taste reacts with carbonate turns litmus paper re
notka56 [123]
The property that does not describe an acid is that it has a bitter taste. Acids have a sour taste, Bases have a bitter taste.
7 0
4 years ago
An object's mass refers to _____ and an object's weight refers to _____. Fill in each blank.
mamaluj [8]

Answer:

c

Explanation:

because the more mass it has the more dense it is

6 0
3 years ago
What two aspects of a force do scientists measure?
malfutka [58]
_Award brainliest if helped!
Force is a vector, A. Magnitude and Direction. 
5 0
3 years ago
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