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3 years ago

Can someone help with this physics it stressing me out

Physics

1 answer:

Gelneren [198K]3 years ago

7 0

There's no benefit from being stressed out, my lord.

   x = 8 cos(3t + π/3)

When t=0, x = 8 cos(π/3)

Position = 8 cos(π/3) = 8 (0.5) = 4 .

Speed = first derivative of 8 cos(3t + π/3) =

   - (8) (3) sin(3t + π/3) = - 24 sin(π/3) = -20.78

Acceleration = second derivative of 8 cos(3t + π/3)

   = first derivative of    - 24 sin(3t + π/3)

   =    - (24) (3) cos(3t + π/3)

   =    -72 cos(π/3) = -36 .

The period of the motion is the period of cos(3t + π/3) .
That's the same as the period of cos(3t) .
When is the first time after (3t=0) when (3t=2π) ? It's t = 2π/3 .
The period is 2π/3 .

The amplitude of the motion is the amplitude of 8 cos(.....) .
The amplitude of the cosine is 1 .
The amplitude of 8cos(...) is 8 .

Words cannot express my boundless gratitude
for the generous gift of your 5 points, my lord.
A full 1 point per answer !
The warm cloudy water and green bread-crust are delicious too.

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4 years ago

During nuclear fission and fusion, matter that seems to disappear is actually converted into

iris [78.8K]

Answer:

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3 years ago

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A circular window of 30 cm diameter in a submarine can withstand a maximum force of 5.20 × 105 N. The maximum depth in a lake to

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Answer: Option (b) is the correct answer.

Explanation:

The given data is as follows.

F = $5.20 \times 10^{5}$ N

g = 9.8 m/s

radius = $\frac{diameter}{2}$

= $\frac{30 cm}{2}$ = 15 cm = 0.15 m (as 1 m = 100 cm)

Formula to calculate depth is as follows.

F = $\rho \times g \times h \times A$

or, h = $\frac{F}{\rho \times g \times A}$

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4 years ago

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vesna_86 [32]

Answer:

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