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3 years ago

13

7) The Curiosity rover was able to trace substances concluding that the planet consists mostly of materials having melting point

s above 700C. What does this tell you about the interior makeup of the planet?

2 answers:

Hitman42 [59]3 years ago

7 0

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-BARSIC- [3]3 years ago

6 0

Answer: it's a scorching hot temperature with a smaller core

Explanation:

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Why do some scientists think that Irr II galaxies have irregular, distorted shapes?

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They believe the distortions happened when two galaxies collided.

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3 years ago

I need help with physical science math problems

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3 years ago

A rotating merry-go-round makes one complete revolution in 4.0s a) what is the linear speed of a child seated 1.2 meters from th

lianna [129]

Answer:a) The linear speed of the rotating merry-go-round is 1.884 m/s.

b) The acceleration of the rotating merry-go-round device is $2.95m/s^2$ .

Explanation:

a) linear speed of the device:

Distance = $2\pi (r)$

Child seated 1.2 meters from the center, which means that radius ,r = 1.2 meters

Time taken to complete one revolution = 4.0 seconds

$\text{Linear speed}=v=\frac{distance}{time}=\frac{2\pi r}{t}=\frac{2\times 3.14\times 1.2 m}{4.0 s}=\frac{7.536 m}{4.0 s}=1.884 m/s$

The linear speed of the rotating merry-go-round is 1.884 m/s.

b) Acceleration

Linear velocity ,v = 1.884 m/s

$a_c=\frac{v^2}{r}$

$=\frac{1.884 m/s\times 1.884m/s}{1.2 m}=2.95m/s^2$

The acceleration of the rotating merry-go-round device is $2.95m/s^2$ .

7 0

4 years ago

A 1.00 kg solid, uniform disk rolls without slipping across a level surface, translating at 3.00 m/s. If the disk's radius is 0.

cluponka [151]

Explanation:

Given that,

Mass of the disk, m = 1 kg

Translational speed of the disk, v = 3 m/s

Radius of the disk, r = 0.39 m

(a) Let K is the tranlational kinetic energy of the disk. Its formula is given by :

$K=\dfrac{1}{2}mv^2$

$K=\dfrac{1}{2}\times 1\times 3^2$

K = 4.5 J

(b) Let K' is the rotational kinetic energy of the disk. Its formula is given by :

$K'=\dfrac{1}{2}I\omega^2$

$K'=\dfrac{1}{2}\dfrac{mr^2}{2}(\dfrac{v}{r})^2$

$K'=\dfrac{1}{4}mv^2$

$K'=\dfrac{1}{4}\times 1\times 3^2$

K' = 2.25 J

Hence, this is the required solution.

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3 years ago

How does the size of oxygens nucleus affect the distribution

son4ous [18]

Answer:

The protons which are present are positively charged that attracts and pulls the electrons closer to the water molecule. Thus, the water molecule's negative charge is distributed all over the atom of oxygen, producing a substantial negative charge.

Explanation:

The nucleus of the oxygen atom is made up of 8 neutrons and 8 protons. The protons which are present are positively charged that attracts and pulls the electrons closer to the water molecule.

Thus, the water molecule's negative charge is distributed all over the atom of oxygen, producing a substantial negative charge. While, as electrons have drifted away from water molecules, the atom of hydrogen are left with just a partially positive charge.

4 0

3 years ago