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kykrilka [37]
3 years ago
14

2. A car is moving south. It is getting faster. In which direction is the acceleration?

Physics
1 answer:
notka56 [123]3 years ago
7 0
South it is the same direction the car is already moving
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A machine part has the shape of a solid uniform sphere of mass 205 g and diameter 4.10 cm. It is spinning about a frictionless a
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Answer:

Answer is in the following attachment.

                                                                                                                                                                                                 

Explanation:

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3 years ago
The angular momentum of a flywheel having a rotational inertia of 0.140 kg ·m2 about its central axis decreases from 3.00 to 0.8
Rasek [7]

Answer

given,

I = 0.140 kg ·m²

decrease from 3.00 to 0.800 kg ·m²/s in 1.50 s.

a) \tau = \dfrac{\Delta L}{\Delta t}

   \tau = \dfrac{0.8-3}{1.5}

        τ = -1.467 N m

b) angle at which fly wheel will turn

   \theta= \omega t +\dfrac{1}{2}\alpha t^2

   \theta= \dfrac{L}{I} t +\dfrac{1}{2}\dfrac{\tau}{I}t^2

   \theta= \dfrac{3}{0.14}\times 1.5+\dfrac{1}{2}\dfrac{-1.467}{0.14}\times 1.5^2

        θ = 20.35 rad

c) work done on the wheel

     W = τ x θ

     W = -1.467 x 20.35 rad

    W = -29.86 J

d) average power of wheel

    P_{av} =-\dfrac{W}{t}

    P_{av} =-\dfrac{(-29.86)}{1.5}

     P_{av} =19.91\ W          

7 0
3 years ago
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Which layer of the atmosphere is the top layer of the thermosphere?
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Explain how all the organelles in a cell model work together to provide nutrition and energy for the cell.
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3 years ago
A granite monument has a volume of 25,365.4 cm. The density of granite is 2.7 g/cms. Use this information to calculate the mass
olchik [2.2K]

Answer:

m = 68,486,6 g is the answer.

Explanation:

To calculate mass you use formula:

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Hope I helped! ☺

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