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AnnZ [28]
2 years ago
10

planet a takes one year to go around the sun at a distance of one au. .planet b is three a u. from the sun. how many years does

planet b take to orbit?
Physics
1 answer:
shtirl [24]2 years ago
4 0

Answer:

3 years

Explanation:

Find the circumference of each orbit in AU.

2xπx1=6.283185307

2xπx3=18.84955592

Divide them.

18.84955592/6.283185307=3

3 years

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A spring hangs at rest from a support. If you suspend a 0.46 kg mass from the spring it elongates 0.79m.
Fudgin [204]

a. The restoring force in the spring has magnitude

F[spring] = k (0.79 m)

which counters the weight of the mass,

F[weight] = (0.46 kg) g = 4.508 N

so that by Newton's second law,

F[spring] - F[weight] = 0   ⇒   k = (4.508 N) / (0.79 m) ≈ 5.7 N/m

b. Using the same equation as before, we now have

F[weight] = (0.75 kg) g = 7.35 N

so that

(5.7 N/m) x - 7.35 N = 0   ⇒   x = (7.35 N) / (5.7 N/m) ≈ 1.3 m

4 0
2 years ago
Name two units for measuring the diameter of nucleus atom.
Evgesh-ka [11]

The two units for measuring the diameter of nucleus atom are femtometre and metre.

How do you measure the size of the nucleus ?

Nucleus size is expressed in fermi, often known as femtometers. between a lighter and a heavier nucleus. Despite its modest size, the nucleus contains the majority of an atom's mass. The weight or mass of the atom's nucleus and neutrons are determined by neutrons.

femtometre (fm), which equals 10^{-15} metre.

A nucleus' diameter largely depends as to how many particles it contains, from about 4 fm for a light nucleus like carbon to 15 fm for a heavy nucleus as lead.

Learn more about nucleus of an atom here :-

brainly.com/question/10658589

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6 0
1 year ago
What is the first step in allopatric speciation?
fomenos

Answer:

The word Allopatric is derived from the Greek words allos = other and Patris = fatherland. Allopatric specification happens when the biological population of the same specie got separated from one another such that it stopped their gene flow or gene migration. It happens due to the geographical changes such as the movement of continents, changes in glaciers, mountains or oceans and it could be happened because of human activities like agriculture and industrial development etc.  The first step of Allopatric specification is Geographical isolation. The species got separated and the long distances makes them unable to interbreed.

3 0
3 years ago
What is one property that all particles of matter have in common?
Mars2501 [29]
They move c<span>onstantly and are attracted to one another. Describe solids, liquids, and gases in terms of shape and volume. Solids have </span>definite<span> shape and volume.</span>
5 0
3 years ago
3. A roller coaster car sits at rest at the top of a hill, 23.5 meters tall. What will be the final
Sloan [31]

Answer:

21.5 m/s

Explanation:

KE at bottom = PE at top

½ mv² = mgh

v = √(2gh)

v = √(2 × 9.8 m/s² × 23.5 m)

v = 21.5 m/s

5 0
3 years ago
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