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Drupady [299]
3 years ago
6

A ball is thrown upward with an initial velocity of +9.8 m/s. How high does it reach before it starts descending?

Physics
1 answer:
aksik [14]3 years ago
3 0
Hope this helps you.

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Which of the following material offers the lowest resistivity?
Yuki888 [10]
Lower resistivity means higher conductivity: among these materials, the best conductor is silver, therefore it must be the material with lowest resistivity among those. We can also have a look at the value of resistivity of the different materials listed in the problem, to check our answer. The resistivities of the materials are the following:
Wood: 1.00\cdot 10^{3} \Omega \cdot m
Salt water: 2.00\cdot 10^{-1} \Omega \cdot m
Silver: 1.59\cdot 10^{-8} \Omega \cdot m
Lead: 2.20\cdot 10^{-7} \Omega \cdot m
<span>We see that the material with lowest resistivity among those is silver, therefore the correct answer is silver.</span>
7 0
3 years ago
Read 2 more answers
sound is a longitudinal wave, and its speed depends on the medium through which it propagates. in air, sound travels at 343 m/s
melomori [17]

The speed of the sound wave in the medium, given the data is 3900 m

<h3>Velocity of a wave </h3>

The velocity of a wave is related to its frequency and wavelength according to the following equation:

Velocity (v) = wavelength (λ) × frequency (f)

v = λf

With the above formula, we can obtain the speed of the sound wave. Details below:

<h3>How to determine speed of the sound wave</h3>

The speed of the wave can be obtained as illustrated below:

  • Frequency (f) = 600 Hz
  • Wavelength (λ) = 6.5 m
  • Velocity (v) =?

v = λf

v = 6.5 × 600

v = 3900 m

Thus, the speed of the sound wave in the medium is 3900 m

Learn more about wave:

brainly.com/question/14630790

#SPJ4

8 0
1 year ago
PLZ HELP!!!!
FrozenT [24]
I would think the answer is c.
5 0
3 years ago
Read 2 more answers
How much protons are in Li
harkovskaia [24]

Answer: 3

Explanation:

Lithium always has 3 protons bc it’s atomic number is 3 which is determined by its amount of protons.

6 0
2 years ago
Read 2 more answers
Which best explains why elements with a completely full outer shell of electrons do not usually bond with other elements to form
Alla [95]

The best answer is C.

The stability of atoms depends on whether or not their outermost shell is filled with electrons. If the outer shell is filled with electrons, the atom is stable and therefore they do not need to react  with other elements to become stable.

On the other hand, atoms with unfilled outer shells are unstable, and will usually form chemical bonds with other atoms to achieve stability. To achieve stability, atoms will form two types of chemical  bonds called ionic bonds and covalent bonds.





8 0
3 years ago
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