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Lesechka [4]
4 years ago
7

What must be part of a quantitative observation?

Physics
2 answers:
inna [77]4 years ago
8 0
a number hope this helps
Pani-rosa [81]4 years ago
5 0

Answer with Explanation:

There are two types of Observation:

1.→ Qualitative Observation : In which things are Selected on the basis of Quality ,like Color,Shape , Size ,Behavior,Nature of a person, etc...

2.→Quantitative Observation: Representation is done with the help of numbers ,Alphabets or Special Characters or by Combining all of them.

Option A: <u>A Change of State:</u> ------It denotes Quality.

Option B:<u> A change in Size :</u> ----It can be both Quality as well as Quantity.For Example Animal loosing and gaining weight can be represented in terms of both numbers as well Quality.For example :50-30,Fat-Thin.

Option C: <u>A number-</u>----It denotes Quantity.

Option D: <u>A Color</u>----It denotes Quality.

⇒A Number is : is must a quantitative observation.

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Biological weathering

Explanation:

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A sound technician is testing the sound acoustics in a theatre for an upcoming music concert. As he moves towards the speakers,
Harlamova29_29 [7]

Answer: Increase in wave frequency

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Calculate the acceleration of a helium nucleus (charge +2e, where e-electronic charge), when it enters an electric field of stre
konstantin123 [22]

Answer:

3.8 x 10^10 m/s^2

Explanation:

Charge, q = 2 e =  2 x 1.6 x 10^-19 C = 3.2 x 10^-19 C

Electric field strength, E = 790 N/C

mass of helium nucleus, m = 6.645 x 10^-27 Kg

the force due to electric filed on a charge particle is given by

F = q x E

Where, q be the charge on the charged particle and E be the strength of electric field.

By substituting the values

F = 3.2 x 10^-19 x 790

F = 2528 x 10^-19 N

According to the Newton's second law

F = m x a

Where, me be the mass and a be the acceleration

By substituting the values

2528\times 10^{-19}=6.645\times 10^{-27}\times a

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3 0
4 years ago
Earthquake waves are 35m long and arrive at a frequency of 2.0Hz. How fast are they travelling?
Nitella [24]

Answer:

70 m/s

Explanation:

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How fastbthw earthquake is t traveling is given bythw velocity of the wave, velocity of wave is related to frequency and wavelength using the formula :

V = frequency * wavelength

V = 2 * 35

V = 70 m/s

3 0
3 years ago
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