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3 years ago

Who described atoms as small spheres that could not be divided into anything smaller? bohr dalton rutherford thomson

Physics

2 answers:

Serjik [45]3 years ago

6 0

Answer:

dalton

Explanation:

Volgvan3 years ago

5 0

John Dalton gave that that description.

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What is the distance to a star whose parallex is 0.1 sec?

Arte-miy333 [17]

Answer:

$30.86\times 10^{13} km$

Explanation:

Given the parallex of the star is 0.1 sec.

The distance is inversely related with the parallex of the star. Mathematically,

$d=\frac{1}{P}$

Here, d is the distance to a star which is measured in parsecs, and P is the parallex which is measured in arc seconds.

Now,

$d=\frac{1}{0.1}\\d=10 parsec$

And also know that,

$1 parsec=3.086\times 10^{13} km$

Therefore the distance of the star is $30.86\times 10^{13} km$ away.

6 0

3 years ago

What does it mean by pressed on?

Doss [256]

"did you press the switch?"

8 0

3 years ago

(will give brainliest to whoever is first and gives reason) A mass is spun in a circle with a frequency of 40Hz. What is the per

Blizzard [7]

Answer:

$\huge\boxed{T = 0.025\ seconds}$

Explanation:

Given:

Frequency = f = 40 Hz

Required:

Time period = T = ?

Formula:

$\sf T = 1 / f$

Solution:

T = 1 / 40

T = 0.025 seconds

$\rule[225]{225}{2}$

Hope this helped!

4 0

3 years ago

Cuales son las carreras de velocidad de medio fondo y fondo?

sammy [17]

Answer:

57490

Explanation:

58=8990

6 0

2 years ago

What is the potential energy, if a body of mass 250 kg is at a height of 30 metre?

stepan [7]

PE = (250) (30) (9.81) = 73575J
I used to use 9.81 as acceleration due to gravity. The answer might be different from what you expect

5 0

3 years ago