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ASHA 777 [7]
3 years ago
15

Which of these statements is correct about forces in the solar system?

Physics
2 answers:
juin [17]3 years ago
7 0
The right answer for the question that is being asked and shown above is that: "B) The magnitude of gravitational forces is greater than the magnitude of electromagnetic forces." The statement that is correct about forces in the solar system is that <span>B) The magnitude of gravitational forces is greater than the magnitude of electromagnetic forces. </span>
Fudgin [204]3 years ago
6 0

Answer:

The magnitude of electromagnetic forces is greater than the magnitude of gravitational forces.

Explanation:

There are four fundamental forces in nature. These are as follows :

(1) Gravitational force

(2) Electromagnetic force

(3) Weak force

(4) Strong force

Gravitational force is the weakest force among all the fundamental forces. The gravitational force exists between masses present in the universe while the electromagnetic force exist between charged particles. The magnitude of gravitational force is weaker than the electromagnetic force. It is about 10^{39} times more than gravitational force.

Hence, the correct statement about forces in the solar system is (A).

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A steady beam of alpha particles (q = + 2e, mass m = 6.68 × 10-27 kg) traveling with constant kinetic energy 22 MeV carries a cu
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Answer:

Explanation:

q = 2e = 3.2 x 10^-19 C

mass, m = 6.68 x 10^-27 kg

Kinetic energy, K = 22 MeV

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(a) time, t = 2.8 s

Let N be the alpha particles strike the surface.

N x 2e = q

N x 3.2 x 10^-19 = i t

N x 3.2 x 10^-19 = 0.27 x 10^-6 x 2.8

N = 2.36 x 10^12

(b) Length, L = 16 cm = 0.16 m

Let N be the alpha particles

K = 0.5 x mv²

22 x 1.6 x 10^-13 = 0.5 x 6.68 x 10^-27 x v²

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So, N x 2e = i x t

N x 2e = i x L / v

N x 3.2 x 10^-19 = 2.7 x 10^-7 x 0.16 / (3.25 x 10^7)

N = 4153.85

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Kinetic energy = Potential energy

K = q x V

22 x 1.6 x 10^-13 = 2 x 1.5 x 10^-19 x V

V = 1.17 x 10^7 V

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