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Llana [10]
2 years ago
15

What makes up the atomic mass of an element?

Physics
1 answer:
UNO [17]2 years ago
8 0

Answer: The sum of protons and neutrons in the nucleus

Explanation: The Formula For Atomic Mass or Mass Number is

                           Atomic mass= Protons + Neutrons

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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
Read 2 more answers
What is the speed of a bobsled whose distance-time graph indicates that it traveled 123m in 28s?
Irina18 [472]
4.39 seconds per meter
6 0
3 years ago
11. a 0.12-kg, 50-cm-long uniform bar has a small 0.055-kg mass glued to its left end and a small 0.11-kg mass glued to the othe
Eduardwww [97]

The left end should the fulcrum be placed is 29.8 cm.

What is fulcrum?
The lever's pivot point is known as a fulcrum. You probably first came across a fulcrum on the playground, directly beneath the see-saw. Any general prop as well as support was referred to as a fulcrum in the 17th century. Thanks to physics class, it now has more scientific connotations. However, the term "fulcrum" is still frequently used to refer to something that is central to an event or activity, as in "the fulcrum of a debate." Who is the father who arranges everyone's playdates? He serves as the focal point of the playground social group.

counter clockwise moments = clockwise moments
(0.055 kg * x) + (0.120*(x-25)) = 0.110 kg * (50-x)
                  0.055x + 0.12x - 3 = 5.5 - 0.11x
                                              x = 29.8 cm

To learn more about fulcrum
brainly.com/question/28320996
#SPJ4

7 0
1 year ago
A bus slows down uniformly from 16.62 m/s to 0 m/s in 10.39 s. How far does it travel before stopping?​
antiseptic1488 [7]

Answer:

bro ily

Explanation:

i looive you

6 0
3 years ago
1. The workpart in a turning operation is 88 min in diameter and 400 mm long. A feed of 0.25 mm/rev is used in this operation. I
Vedmedyk [2.9K]

Find the given attachments

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4 years ago
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