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3 years ago

14

What is the unit of pressure? Why is it called a derived unit?Why has SI system

1 answer:

Dovator [93]3 years ago

6 0

Answer:

pascal

Explanation:

its obtained after either division or multiplication

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Review. As an astronaut, you observe a small planet to be spherical. After landing on the planet, you set off, walking always st

anyanavicka [17]

To find the mass of the planet we will apply the relationship of the given circumference of the planet with the given data and thus find the radius of the planet. From the kinematic equations of motion we will find the gravitational acceleration of the planet, and under the description of this value by Newton's laws the mass of the planet, that is,

The circumference of the planet is,

$\phi = 25.1m$

Under the mathematical value the radius would be

$\phi = 2\pi r$

$r = \frac{25}{2\pi}$

$r = 3.9788km$

Using second equation of motion

$x = \frac{1}{2} at^2$

Replacing the values given,

$1.4 = \frac{1}{2} a (29.2)^2$

Rearranging and solving for 'a' we have,

$a = 0.003283m/s^2$

Using the value of acceleration due to gravity from Newton's law we have that

$a = \frac{GM}{r^2}$

Here,

r = Radius of the planet

G = Gravitational Universal constant

M = Mass of the Planet

$\frac{(6.67*10^{-11})*M}{(3.9788*10^3)^2} = 0.003283$

$M = 7.79201*10^{14}kg$

Therefore the mass of this planet is $7.79201*10^{14}kg$

5 0

3 years ago

Pls help me!!!!! Brainliest

Studentka2010 [4]

Answer:

B, C

Explanation:

7 0

2 years ago

Read 2 more answers

Helen adjusts the armature of an electric generator by increasing the number of coils around the iron core. What is Helen most l

Luba_88 [7]

Answer:

D

Explanation:

Got it right on the edge quiz

8 0

2 years ago

Read 2 more answers

The height a ball bounces is less than the height of the previous bounce due to friction. The heights of the bounces form a geom

AlladinOne [14]

Answer:

Explanation:

Let the first height be h . second height .75h

third height .75h . fourth height .75²h

fifth height .75²h , sixthth height .75³ and so on

Total distance consists of two geometric series as follows

1 ) first series

h + .75h + .75²h + .75³h......

2 ) second series

.75h +.75²h +.75³h + .75⁴h .......

Sum of first series :

first term a = h , commom ratio r = .75

sum = a / (1 - r )

= h / 1 - .75

= h / .25

4h

sum of second series :--

first term a = .75 h , commom ratio r = .75

sum = a / (1 - r )

= .75h / 1 - .75

= .75h / .25

3h

Total of both the series

= 4h + 3h

= 7h .

h = 1 m

Total distance = 7 m

6 0

3 years ago

A planet outside of our solar system

Zolol [24]

Answer:

exoplanets is any planet beyond our solar system.

4 0

3 years ago