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3 years ago

What two factors determine the force of gravity between two objects?

Physics

1 answer:

Yuki888 [10]3 years ago

5 0

Answer:

Mass and distance between them are two factors on which force of gravity depends

Explanation:

According to law of gravitation

Gravitational force between two object is given by $F=\frac{Gm_1m_2}{r^2}$ , here G is gravitational constant $m_1\ and\ m_2$ are mass of the objects and r is distance between them

From the relation we can see that force of gravity is dependent on the mass of the objects and distance between them.

So mass and distance between them are two factors on which force of gravity depends

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Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that

valentinak56 [21]

Answer:

1. Daughter element : the new element produced along with a decay particle in a nuclear transmutation

2. half life: the time required for the decay of one-half of the atoms in a sample of radioactive material

3. parent element : the substance that decays in a nuclear transmutation

4. transmutation : the change of one chemical element into another by nuclear decay or radioactive bombardment

Explanation: Radioactive decay process is a type of process in which a less stable nuclei also called as parent element decomposes to a stable nuclei or a daughter element by releasing some radiations or particles like alpha, beta particles or gamma-radiations and the process by which one element changes to another element is called as transmutation.

$_A^Z\textrm{X}\rightarrow _{A-2}^{Z-4}+_2^4\alpha$

Half life is the time taken by an element to decay to half of its initial value.

4 0

4 years ago

tony walks at an average speed of 70m/min from home to school. If the difference between his home and the school is 2100 m, how

finlep [7]

Answer. 30 minutes
Explanation. If he walks 70 m in one minute how long will it take him to walk 2,100 m. Well, this is a simple division problem (you could also use a ratio box).
2100/70= 30. Hope this helps, let me know if it’s correct so others can use it :)
Good luck.

5 0

3 years ago

A falling stone is at a certain instant 90 feet above the ground. two seconds later it is only 10 feet above the ground. if it w

choli [55]

The equation relevant to this is:

S(t) = So + Vot - At²/2

Therefore we can create two equations:
S(t) = 90 = So - 4t - 16.1t² --> eqtn 1
S(t+2) = 10 = So - 4(t+2) - 16.1(t+2)² --> eqtn 2

Expanding eqtn 2:
10 = So - 4t - 8 - 16.1(t² + 4t + 4)
10 = So - 4t - 8 - 16.1t² - 64.4t - 64.4
10 + 8 + 64.4 = So - 68.4t - 16.1t²
82.4 = So - 68.4t - 16.1t² --> eqtn 3

Subtracting eqtn 1 by eqtn 3:

90 = So - 4t - 16.1t²

82.4 = So - 68.4t - 16.1t²

=> 7.6 = 64.4t

t = 0.118 s

Therefore calculating for initial height So:

82.4 = So - 68.4(0.118) - 16.1(0.118)²

So = 90.7 ft

7 0

3 years ago

Akhtar, Kiran and Rahul were riding in a motorocar that was moving with a high velocity on

VikaD [51]

Answer:

According to the law of conservation of momentum:

Momentum of the car and insect system before collision = Momentum of the car and insect

system after collision

Hence, the change in momentum of the car and insect system is zero.

The insect gets stuck on the windscreen. This means that the direction of the insect is

reversed. As a result, the velocity of the insect changes to a great amount. On the other hand,

the car continues moving with a constant velocity. Hence, Kiran’s suggestion that the insect

suffers a greater change in momentum as compared to the car is correct. The momentum of

the insect after collision becomes very high because the car is moving at a high speed.

Therefore, the momentum gained by the insect is equal to the momentum lost by the car.

Akhtar made a correct conclusion because the mass of the car is very large as compared to

the mass of the insect.

Rahul gave a correct explanation as both the car and the insect experienced equal forces

caused by the Newton’s action-reaction law. But, he made an incorrect statement as the

system suffers a change in momentum because the momentum before the collision is equal to

the momentum after the collision.

4 0

3 years ago

What determines the number of possible sublevels?

Talja [164]

<h2>Hello!</h2>

The answer is A. the principal energy level

The principal energy level or principal quantum number n, tell us about the position of an determined electron in the energy levels relative to the greater average distance of an electron from the nucleus, the larger the value of n and the higher its energy.

The principal energy levels contains n sublevels, $n^{2}$ orbitals and $2n^{2}$ electrons.

For example, the number 1, has one orbital which is contained in a energy sublevel, its called s orbital, and it's just an orbital with 2 electrons.

Have a nice day!

7 0

3 years ago

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