3 years ago

What is a normal force?

Physics

1 answer:

Flauer [41]3 years ago

3 0

Is the component perpendicular to the surface on contact of the contact force <span />

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The answer is biodiversity

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3 years ago

The two blocks in oscillate on a frictionless surface with a period of 1.5 s. The upper block just begins to slip when the ampli

Setler79 [48]

Answer:

0.72

Explanation:

$T$ = Time period of oscillation = 1.5 s

Angular frequency is given as

$w = \frac{2\pi }{T}\\w = \frac{2(3.14) }{1.5}\\w = 4.2 rad/s$

$A$ = Amplitude of oscillation = 40 cm = 0.40 m

$\mu$ = Coefficient of static friction = ?

$a$ = acceleration of the block

$m$ = mass of the block

Maximum acceleration of the block is given as

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frictional force is given as

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As per newton's second law

$f = ma \\\\\mu mg = ma \\\mu g = a\\\mu g = Aw^{2}\\\mu (9.8) = (0.40)(4.2)^{2}\\\mu = 0.72$

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These electromagnetic waves are the most energetic:

Nady [450]

The answer to number 1 is D and the answer for the second one is 2
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What If? The coil and applied magnetic field remain the same, but the circuit providing the current in the coil is now changed.

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Using equations

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2 years ago

Which is a source of AC current? A) a battery B) a generator C) chemical cells wired in series D) chemical cells wired in parall

Mumz [18]

NOOO

its B

the correct source is a generator. The others are all sources of DC, a generator uses electromagnetic induction to create AC.

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3 years ago

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