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Answer:

B

Explanation:

the balloon has a negative charge and the metal sphere has a positive charge

Answer: B

Explanation:

The balloon will pick up stray electrons, so it will become negatively charged. Since it is attracted to the metal sphere, the sphere must be positively charged.

Answer:

(u mean theory* i think)

Grounded theory differs from either qualitative content analysis or thematic analysis because it has its own distinctive set of procedures, including theoretical sampling and open coding. In contrast, the procedures in the other two are not specified at the same level of detail.

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Answer:

3) It varies depending on the Moon's phase.Explanation:

Answer:

1. Is a different pitch, has a different speed

2. is brighter or dimmer, has a different energy

Explanation:

Answer: The angle of incidence equals the ray of reflection. So this law states that any ray of light that strikes an object will reflect off the object such that the striking or incident angle is identical to the reflecting angle (as measured from the normal).

Explanation:

Answer:D

Explanation:

The force of gravity from Mars will pull on the space probe the same amount no matter how far away it is​, so option D is correct.

All material objects in the universe are subject to the force of gravity, also known as gravitation. The force of gravity tends to draw any two non-zero mass objects or particles toward one another. Subatomic particles and galaxy clusters are both affected by gravity, as are objects of all sizes.

Due to the law of gravity, or gravitation, which draws all objects with mass in its vicinity toward it, Mars' gravitation is a natural occurrence. Due to the planet's lesser mass, its gravity is weaker than that of Earth. On Mars, the gravitational acceleration fluctuates, but on average it is 3.72076 m/ s² (or around 38% of Earth's).

Therefore, the force of gravity from Mars will pull on the space probe the same amount no matter how far away it is​.

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Answer:

Neseciti puntos oara mi tarea y mad ni entiendo lo wue dices

Answer:

105

Explanation:

Trust brother

Answer:

v = 16.98 km/s

Explanation:

Given that,

Distance, d = 4500 km

Time, t = 265 s

We need to find its average speed. The total distance covered divided by total time taken is called average speed of an object. So,

[tex]v=\dfrac{4500\ km}{265\ s}\\\\=16.98\ km/s[/tex]

So, the average speed is 16.98 km/s.

Answer:

R = 12 ohm

Explanation:

Resistance are in parallel

1 ÷ Resistance = 1 ÷ 20 + 1 ÷ 30

1/R = 50/600

1/R = 1/12

R = 12 ohm

Answer:-4.1858

Explanation: I hate Acellus

If A +6.33 μC charge q₁ is attracted by a force of 0.115 N to a second charge q2 that is 1.44 m away. then the value of q₂ = 4.23 μC.

Electrostatic force is a force of attraction or repulsion between two unlike or like charges respectively. when like charges come closer to each other, they gets repel by one another and it gets attracted for unlike charges. Force of attraction or repulsion between two point charges are given by coulomb's law. The force of attraction between two charges are given by coulomb's law.

the law states that the force of attraction or repulsion between two point charges is directly proportional to product of magnitude of both the charge and inversely proportional to square of the distance between them.

i.e. F ∝ q₁q₂

F ∝ 1/r²

F ∝ q₁q₂/r²

F = kq₁q₂/r²

where k is proportionality constant k = 1/4π∈₀ = 8.9×10⁹

In this problem,

Given,

q₁ = 6.33×10⁻⁶ C

F = 0.115N

r = 1.44m

q₂ = ?

putting this values in the equation,

0.115 = 8.9×10⁹×6.33×10⁻⁶ ×q₂÷1.44²

q₂ = 4.23 μC.

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Answer:

the nucleus of the atom you have conserved almost all its mass in a very small volume

Explanation:

In Rutherforf's experiment, most alpha particles had few deflections, eg a few of them were deflected at small angles, a much smaller number deflected at large angles, and very few were deflected.

The explanation that I found for this is that if all the mass and the positive charge of the atom is in a small volume, they could specifically calculate this the relationship of the volumes,

          V_atom / V_nucleo = 10⁴

Therefore, the phrase that explains the observing phenomenon is that the nucleus of the atom has concentrated almost all its mass, very small emolument and in that same volume is all the positive charge of the atoms.

In summary, the phrase that describes the process is:

  the nucleus of the atom you have conserved almost all its mass in a very small volume

Answer:

The scale read 1280 N.

Explanation:

Given that,

The mass of a person, m = 80 kg

We need to find the scale reading when the elevator is moving upward at 6.2 m/s².

We know that, when an elevator moves up, the reading on the scale is given by :

N-mg=ma

N=m(a+g)

Put all the values,

N = 80(6.2+9.8)

= 80(16)

= 1280 N

Hence, the scale read 1280 N.

Answer: An educated guess based on observations

Explanation: A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world.

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Answer:

d

Explanation:

d just because it is and it's talking about mass and physical match's up with mass

Answer:

Explanation:

Given the following data;

Initial volume = 2.5 L

Initial temperature = 350 K

Final volume = 2V1 = 2*2.5 = 5 L

To find the final temperature, we would use Charles law;

Answer:

an earthquake

Explanation:

the energy is being released

Answer:

4.5 m/s

Explanation:

13.5 x 1/3

Answer:

Archimedes' Principle

Explanation:

Its because Archimedes' Principle states "that the buoyant force on an object is equal to the weight of the fluid displaced by the object.... If you want to know the buoyant force on an object, you only need to determine the weight of the fluid displaced by the object."