3 years ago

Friction is a force in which two objects __________.

Physics

2 answers:

balu736 [363]3 years ago

7 0

The answer should be C) Slide against each other.

Kazeer [188]3 years ago

4 0

Answer:

Explanation:

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The unit of force, Newton is a derived unit. (give reasons)

vitfil [10]

Answer:

$\boxed{ \sf{see \: below}}$

Explanation

The unit of force, Newton is a derived unit because it depends on three fundamental units. i.e kilogram , meter and second.

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3 years ago

Speed of a train is 5m/s, find its value in km/hr.

antiseptic1488 [7]

Answer: 18km/hr

0.005km/s

1 sec --> 0.005

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2 years ago

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Vesna [10]

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2 years ago

A wheel is rotating at 30.0 rpm. The wheel then accelerates uniformly to 50.0 rpm in 10.0 seconds. Determine the – a) rate of an

Mademuasel [1]

Answer:

The angular acceleration is $0.209\ rad/s^2$

Explanation:

Given that,

Angular velocity, $\omega_{i} = 30.0\ rpm$

Angular velocity, $\omega_{f} = 50.0\ rpm$

Time t = 10.0 sec

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Using formula of angular acceleration

$\alpha=\dfrac{\Delta \omega}{\Delta t}$

$\alpha=\dfrac{\omega_{f}-\omega_{i}}{\Delta t}$

$\alpha=\dfrac{50.0-30.0}{10.0}$

Now, we change the angular velocity in rad/s.

$\omega=20\times\dfrac{2\pi}{60}$

$\omega=2.09\ rad/s$

$\alpha=\dfrac{2.09}{10.0}$

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Hence, The angular acceleration is $0.209\ rad/s^2$

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3 years ago

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State coulomb's law mathematically

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Coulomb's law is express as:

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1 year ago