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3 years ago

PLEASE HELP ASAP:

2 answers:

8 0

True since coulomb's law states that There is electric force between like charges or opposite charges. The negative sign only shows the nature of the force.

<h3>What is the coulombs law ?</h3>

coulombs formula is given by

$F= \dfrac{K\times q_{1} \times q_{2}}{r^{2} }$

Now it states that if two charged particles are separated by the distance r and having same or opposite charge will attract or repel each other.

The intensity of the force depend upon the distance and the nature of the charge.

Hence coulomb's law states that There is electric force between like charges or opposite charges. The negative sign only shows the nature of the force.

To know more about coulomb's law follow

https://brainly.in/question/332179

Fantom [35]3 years ago

4 0

Answer:

true

Explanation:

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After fixing a flat tire on a bicycle you give the wheel a spin. Its initial angular speed was 5.45 rad/s and it rotated 14.4 re

Komok [63]

Answer:

(a) α = -0.16 rad/s²

(b) t = 33.2 s

Explanation:

(a)

Applying 3rd equation of motion on the circular motion of the tire:

2αθ = ωf² - ωi²

where,

α = angular acceleration = ?

ωf = final angular velocity = 0 rad/s (tire finally stops)

ωi = initial angular velocity = 5.45 rad/s

θ = Angular Displacement = (14.4 rev)(2π rad/1 rev) = 28.8π rad

Therefore,

2(α)(28.8π rad) = (0 rad/s)² - (5.45 rad/s)²

α = -(29.7 rad²/s²)/(57.6π rad)

<u>Negative sign shows deceleration</u>

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(b)

Now, we apply 1st equation of motion:

ωf = ωi + αt

0 rad/s = 5.45 rad/s + (-0.16 rad/s²)t

t = (5.45 rad/s)/(0.16 rad/s²)

6 0

4 years ago

Heat always transfers from substances with _____ thermal energy to substances with _______ thermal until both substances reach t

Reika [66]

Heat always transfers from substances with high thermal energy to substances with low thermal until both substances reach the maximum temperature

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2 years ago

A car moved 35 km to the South and Then 10 km to the North. What is its Displacement?

Harrizon [31]

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Explanation:

That is because you would subtract 10 from 35 to get the distance away from the starting point.

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Helpp

frosja888 [35]

B, refraction I believe.

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