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Andrei [34K]
2 years ago
12

How many elements are in the mixture pictured? A. 7 B. 4 C. 3 D. 2

Physics
1 answer:
alex41 [277]2 years ago
5 0

Answer:

C: 3

Explanation:

Cause of the colors

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An object is thrown with an initial speed v near the surface of Earth. Assume that air resistance is negligible and the gravitat
IgorLugansk [536]

Answer:

E. downward and constant

Explanation:

Freefall is a special case of motion with constant acceleration because the acceleration due to gravity is always constant and downward. This is true even when an object is thrown upward or has zero velocity.

For example, when a ball is thrown up in the air, the ball's velocity is initially upward. Since gravity pulls the object toward the earth with a constant acceleration ggg, the magnitude of velocity decreases as the ball approaches maximum height. At the highest point in its trajectory, the ball has zero velocity, and the magnitude of velocity increases again as the ball falls back toward the earth.

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How star properties affect star formation? Provided following are the spectral types of four different main-sequence stars. Rank
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-M6

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-A5

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Explanation:

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3 years ago
When talking about velocity,what is significant about the sign (+ or -)?​
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Answer:

오늘(-)중앙일보수고하셨습니다오늘하루도 화이팅입니다오늘 하루도 화이팅

5 0
2 years ago
An optical disk drive in your computer can spin a disk up to 10,000 rpm (about 1045 rad / s). If a particular disk is spun at 55
disa [49]

Answer:

Explanation:

Given

initial angular velocity \omega _0=558.2 rad/s

Time taken to stop t=0.435 s

using kinematic relation

\omega =\omega _0+\alpha \cdot t

here \omega =final angualr velocity is zero because it is coming to rest

\alpha =angular acceleration

thus \alpha =-\frac{\omega _0}{t}

\alpha =-\frac{558.2}{0.435}=-1283.21 rad/s^2

Magnitude is 1283.21 rad/s

If the diameter of disk d=0.12 m

then

radius r=0.06 m

Linear acceleration is givenby \alpha \times r

here radial distance is \frac{1}{11} from center

thus r'=\frac{r}{11}=\frac{0.06}{11}=0.00545

a_L=1283.21\times 0.00545=6.99 m/s^2

             

7 0
3 years ago
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a full of scrap iron is floating on water in a lake. if all the iron is dropped into water the water level will​
HACTEHA [7]

Answer:

Rise

Explanation:

If all the iron is dropped into water the water level will rise .

4 0
3 years ago
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