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ArbitrLikvidat [17]
3 years ago
8

Is this right? if not how do u do it?

Physics
1 answer:
Ronch [10]3 years ago
3 0
You've definitely got the right idea and your procedure is correct.

But I see one mistake for sure, plus a few other things that
I'm not sure of.

The mistake for sure:  If the ending water is 12 ml,
then the beginning water is 9 ml, not 11 ml.

Things I'm not sure of:

-- I'm not sure that I'm remembering correctly at the moment,
but I have a sneaking hunch that you're supposed to read the
level at the BOTTOM of the meniscus, not the top.
It won't matter, because the DIFFERENCE will be the same
either way.  But if the teacher wants you to read from the bottom,
then your numbers may be marked wrong.

-- The question at the bottom asks for the "volume of cherry",
but I seem to see TWO cherries in the water.  Does than mean
they expect you to take only half of the displacement ?

-- They ask for "volume of cherry" twice.
Maybe that means they want you to end up with the volume in cm³
instead of ml.  (The number is the same.)
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How does the study of social sciences affect our society?
Kruka [31]

Explanation:

study of social sciencake us an effcient citizen of a democracy ,and it also help us to solve the practical problem in our daily life.

8 0
3 years ago
What’s an example of absorption
DedPeter [7]
Soaking up spilled milk with a paper towel
7 0
3 years ago
1
Lesechka [4]

Answer: 11 m/s

Explanation:

7 0
3 years ago
While traveling along a highway a drivers velocity is 9m/s. In 12 seconds how far has the car gone?
kupik [55]

While travelling along a highway a drivers velocity is 9 m/s. In 12 seconds, the car has gone for 108 m.

<u>Explanation:</u>

The car travelling along the highway has a uniform velocity of 9 m/s. therefore to calculate the distance travelled by the car with the uniform velocity in 12 seconds, simple formula of velocity is to be employed.

Thereby, as we know that

           \text {velocity}=\frac{\text {displacement}}{\text {time}}

The displacement is along the highway with uniform motion, therefore, distance=displacement

Given that,

Velocity = 9 m/s  

Time = 12 s

Putting the values in the formula, we get,

       9 = \frac{d}{12}

       d=12 \times 9=108 \mathrm{m}

Therefore, the car travels for 108 m in the 12 seconds while travelling along highway with 9 m/s of velocity.

5 0
3 years ago
Warsaw, Poland, Olivia Oliver of Nova Scotia broke the world record for being the fastest spinner on ice skates. She achieved a
Mekhanik [1.2K]

Answer:

155.5 rev/min

Explanation:

First, we will calculate the initial moment of inertia I_o. We will consider the ice skater as a rod rotating around its axis. Then, we calculate the final moment of inertia I_f. In this occasion we consider the arms as a rod of length L that is horizontally positioned, L so that the length of an arm is L/2. We will call M_1 the mass that remains close to the rotation axis (90 percent) and M_2 the mass located at the arms (10 percent). Finally, we write the equation for the conservation of angular momentum and we solve for  ω_f.

I_o=MR^2/2

     =(45)(0.15)^2/2

     =0.5 kgm^2

M_1=(0.9)(45)

      =40.5 kg

M_2=(0.1)(45)

      =4.5 kg

  I_f=M_1*R^2/2+M_2*L^2/12

      =1.1 kg m^2

I_f*ω_f=I_o*ω_o

     ω_f = I_o*ω_o/ I_f

            =155.5 rev/min

4 0
3 years ago
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