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3 years ago

A(n) ___ object is not electrically neutral.

Physics

1 answer:

Korvikt [17]3 years ago

8 0

Answer:

No, there are always protons, neutrons, and electrons. When an object is neutral, it means the positive and negative charges sum to zero (are equal and opposite). NO, if an object has no net charge it simply means that the amount of positive and negative charges (protons and neutrons) are the same.

Explanation:

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An infinite line charge of linear density λ = 0.30 µC/m lies along the z axis and a point charge q = 6.0 µC lies on the y axis a

vitfil [10]

Answer:

$E_{net} = (3.765\hat i - 1.207\hat j)kN/C$

Explanation:

Electric field due to long line charge on position of charge at x = 4 m is given as

$E = \frac{2k\lambda}{r} \hat i$

so we have

$\lambda = 0.30 \mu C/m$

now we have

$E = \frac{2(9\times 10^9)(0.30 \mu C/m)}{4}$

$E = 1350 N/C$

Now electric field due to the charge present at y = 2.0 m

$E = \frac{kq}{r^2} \hat r$

$E = \frac{(9\times 10^9)(6 \times 10^{-6})}{2^2 + 4^2}\times \frac{4\hat i - 2\hat j}{\sqrt{4^2 + 2^2}}$

$E = 603.7 ( 4\hat i - 2\hat j)$

$E = 2415\hat i - 1207.5 \hat j$

Now total electric field is given as

$E_{net} = (1350\hat i) + (2415\hat i -1207.5\hat j)$

$E_{net} = 3765\hat i - 1207.5 \hat j$

$E_{net} = (3.765\hat i - 1.207\hat j)kN/C$

6 0

3 years ago

(04.02 LC)

sdas [7]

Answer: mixture

Explanation: mixture contains two or more substances which are not chemically bonded together

7 0

3 years ago

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You throw a ball straight up. Compare the sign of the work done by gravity while the ball goes up with the sign of the work done

Elden [556K]

Answer:

c. Work is - on the way up and + on the way down

Explanation:

Work done is given as the product of the applied force and the displacement of the object.

Work done = F x d

Work done = mg x d

where;

g is acceleration due to gravity = 9.8 m/s²

When the ball goes up, it moves against the force of gravity which tends to pull every object downwards. Since the ball moves against gravity, the work done is negative.

Also, when the ball goes down, it moves in the direction of gravity which acts downwards. Since the ball moves in the same direction as gravity, the work done is positive.

The correct option is "C. Work is negative (-) on the way up and positive (+) on the way down"

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3 years ago

following statement supports which theory? "Astronomers have observed protoplanetary disks around distant newborn stars." Big Ba

Irina-Kira [14]

Answer: B

Nebula theory

Explanation:

Nebular Theory: This states that the solar system developed out of an interstellar cloud of dust and gas, called a nebula. If astronomers have observed protoplanetary disks around distant newborn stars, the Sun-to-be collected most of the mass in the nebula's center, forming a Protostar

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3 years ago

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Which best describes what forms in nuclear fission?A. two smaller, more stable nucleiB. two larger, less stable nucleiC. one sma

Step2247 [10]

Answer:B. two larger, less stable nuclei

Explanation: They collied and don't combine

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3 years ago

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