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diamong [38]
3 years ago
11

Friction force depends on (select any of the following)

Physics
1 answer:
igor_vitrenko [27]3 years ago
4 0

-the contact force

-weight of an object

-the surfaces in contact (coefficient of friction).

these are what I think are the answer

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The process of finding objects by emitting sounds and interpreting their reflections is called
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Echolocation is the process of finding objects by emitting sounds and interpreting their reflections. This process uses echo. When sound is produced, it travels and hits an object. Sound bounces off the object and is reflected back. The echo produced helps to identify the location of the object and even size of the object. Echolocation is used by animals such as bats and dolphins to navigate and also hunt.
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4 years ago
Two point charges are brought closer together, increasing the force between them by a factor of 17. By what factor was their sep
nignag [31]

Answer:

\dfrac{r_1}{r_2}=4.123

Explanation:

Given:

Final force between them=17(initial force between them)

initial separation between them r_1

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F_2=17F_1\\\dfrac{kQq}{r_2^2}=17\dfrac{kQq}{r_1^2}\\\dfrac{r_1^2}{r_2^2}=17\\\dfrac{r_1}{r_2}=4.123

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3 years ago
A ball is thrown vertically down from the edge of a cliff with a speed of 4 m/s, how high is the cliff, if it took 12 s for the
Vesna [10]

Answer:

The height of the cliff from which the ball was dropped from is 224.4m.

\overline{v}={\frac{\Delta x}{\Delta t}}

Given the data in the question;

Initial velocity of the ball;

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To get the height of the Cliff, we use the Second Equation of Motion:

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Explanation:

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Acceleration directed toward the center of a circular path that produces uniform circular motion is
tester [92]
<span>Th answer is Centripetal</span>
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4 years ago
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