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3 years ago

g Explain how electric fields are like gravitation fields and how they differ. The Electric field may be helpful

Physics

1 answer:

stepladder [879]3 years ago

8 0

Answer:

The two fields vary with the inverse of the square of the distance

The gravitational field is always attractive, but the electric field can be attractive if the charges are of

Explanation:

The gravitational field is produced by the attraction of two masses, the electric field is due to interaction between two charges, if they are of a different sign they attract and if they are of the same sign they repel.

The two fields vary with the inverse of the square of the distance

The gravitational field is always attractive, but the electric field can be attractive if the charges are of a different sign and repulsive if the charges are of the same sign.

The gravitational field is important for objects of great masses, it shapes the planets and galaxies, the magnetic field is troublesome for the tamos and molcajetes, it shapes the micro world

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A ball rolls down a hill and hits a box. The momentum of the ball decreases. Which happens to the momentum?

Nezavi [6.7K]

First let us examine our options. For B, the law of inertia state that an object will keep on moving unless acted upon an external force. And I am thinking this is not the appropriate answer here. Also for C momentum and mass are not the same. Momentum is energy. Momentum cannot be converted to mass. A is the answer since momentum. When the ball hits the box, the box will move and decreases the velocity of the rock. Here momentum is transferred. <span />

8 0

4 years ago

The equation represents the decomposition of a generic diatomic element in its standard state. 12X2(g)⟶X(g) 12X2(g)⟶X(g) Assume

Andreas93 [3]

Answer:

At 2000 K, K=0.72

At 3000 K, K=14.7

Explanation:

Given that

ΔG = 5.24 KJ/mol ,T= 2000 K

ΔG =- 65.59 KJ/mol ,T= 3000 K

The Gibbs energy at temperature T is given as

ΔG =- RT ln K

R= Universal gas constant

R=8.314 J/mol.K

At T= 2000 K ,ΔG = 5.24 KJ/mol

ΔG =- RT ln K

5.24 x 1000 = 8.314 x 2000 ln K

$K=e^{-0.32}$

K=0.72

At T= 32000 K ,ΔG = -65.59 KJ/mol

ΔG =- RT ln K

-65.59 x 1000 = -8.314 x 3000 ln K

$K=e^{2.68}$

K=14.7

7 0

3 years ago

A 1.0 kg ball has a potential energy of 10 J and falls to the ground. What is the velocity right before it hits the ground?

olga2289 [7]

Answer:

10m/s

Explanation:

5 0

3 years ago

A proton moving at 8.00 106 m/s through a magnetic field of magnitude 1.72 T experiences a magnetic force of magnitude 7.20 10-1

gladu [14]

Answer:

19.1 deg

Explanation:

v = speed of the proton = 8 x 10⁶ m/s

B = magnitude of the magnetic field = 1.72 T

q = magnitude of charge on the proton = 1.6 x 10⁻¹⁹ C

F = magnitude of magnetic force on the proton = 7.20 x 10⁻¹³ N

θ = Angle between proton's velocity and magnetic field

magnitude of magnetic force on the proton is given as

F = q v B Sinθ

7.20 x 10⁻¹³ = (1.6 x 10⁻¹⁹) (8 x 10⁶) (1.72) Sinθ

Sinθ = 0.327

θ = 19.1 deg

4 0

4 years ago

What are the only elements that exist in nature as isolated atoms

agasfer [191]

Answer:

The only such elements are the Noble Gases (He, Ne, Ar, Kr, Xe, Rn)

(that is helium, neon, argon, krypton, xenon and radon)

Term: Monoatomic

Explanation:

6 0

3 years ago