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3 years ago

How would the absence of gravity affect the formation of planets?

Physics

2 answers:

IgorLugansk [536]3 years ago

8 0

Answer:

Explanation:

nothings pulling them together

OverLord2011 [107]3 years ago

6 0

Without gravity, all rocks and debris would lose masses and never accrete into a planet.

Answer: Option B

<u>Explanation: </u>

According to the well-known physicist James Overduin, the Earth would be nothing but a flat surface in the absence of gravity. Gravity provides weight to objects with which they attract towards the source i.e. the Earth and that's why it forms the circular shape.

If the universe and Earth would not have gravity, it would not curve and since gravity is considered as the curvature of space and time. There would be no matter and energy that cause it to curve.

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1. Determine the image distance in each of the following.

miskamm [114]

It is given that for the convex lens,

Case 1.

u=−40cm

f=+15cm

Using lens formula

−

v=+24.3cm

The image in formed in this case at a distance of 24.3cm in left of lens.

Case 2.

A point source is placed in between the lens and the mirror at a distance of 40 cm from the lens i.e. the source is placed at the focus of mirror, then the rays after reflection becomes parallel for the lens such that

u=∞

f=15cm

Now, using mirror’s formula

∞

v=+15cm

The image is formed at a distance of 15cm in left of mirror

6 0

3 years ago

a block (mass 0.6kg) is released from rest at point A at the top of a ramp inclined at 36.9 degress above the horizontal. The bl

bija089 [108]

14.136 J as shown on the photo with two thought processes but overall same calculation

3 0

3 years ago

A car is traveling at 10 m/s. 10 seconds later the car is traveling 40 m/s. What is the car’s acceleration?

ratelena [41]

Answer:

a = 3 m/s^2

Explanation:

Vi = 10 m/s

Vf = 40 m/s

t = 10 s

Plug those values into the following equation:

Vf = Vi + at

40 = 10 + 10a

---> a = 3 m/s^2

3 0

3 years ago

Which of the given will facilitate a normal Diels–Alder reaction?

babymother [125]

Answer:

Explanation:

- The rate of the Diels-Alder is orders of magnitude faster if there is an electron-withdrawing group on the dienophile. For example, replacing a hydrogen on ethene with the electron-withdrawing group CN results in about a 10^5 increase in the reaction rate.

- Other common electron withdrawing functional groups that will accelerate the Diels Alder reaction of dienophiles include aldehydes, ketones, and esters.

- In short, any functional group conjugated with the pi bond which can act as a pi acceptor will accelerate a Diels-Alder reaction with a typical diene.

- See attachment for graphical explanation.