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Jet001 [13]
3 years ago
9

Someone just help me

Physics
1 answer:
Zanzabum3 years ago
3 0
C according to my calculations
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Which statement is true about the scientific method?
dsp73

Answer: A. It follows one prescribed sequence of steps.

Explanation:

A scientific method can be define as the procedure which is required to be followed so as to prove the cause of a scientific phenomena. The scientific method usually consist of steps of experimentation procedures which are performed under controlled conditions so as to avoid any error in the observation as well as in the results. The scientific method is necessary to relate the experimental conditions with the nature.

3 0
4 years ago
The expression below was formed by combining different gas laws.
kap26 [50]

Answer:

Avogadro's law.

Explanation:

Avogadro’s law states that, equal volumes of all gases at the same temperature and pressure contain the same number of molecules.

Mathematically,

V n

V = Kn where V = volume in cm3, dm3, ml or L; n = number of moles of gas;

K = mathematical constant.

The ideal gas equation is a combination of Boyle's law, Charles' law and Avogadro’s law.

V 1/P at constant temperature (Boyle’s law)

V T at constant pressure ( Charles’law)

V n at constant temperature and pressure ( Avogadro’s law )

Combining the equations yields,

V nT/P

Introducing a constant,

V = nRT/P

PV = nRT

Where P = pressure in atm, Pa, torr, mmHg or Nm-2; V = volume in cm3, dm3, ml or L; T = temperature in Kelvin; n = number of moles of gas in mol; R = molar gas constant = 0.082 dm3atmK-1mol-1

7 0
4 years ago
A ray of light traveling in water (n = 1.33) is incident at the flat surface of a block of glass (n = 1.60). If the incident ray
mel-nik [20]

Answer:

45.19^{\circ}

Explanation:

We are given that

n_1=1.33

n_2=1.6

\theta_1=58.6^{\circ}

We have to find the angle of refraction.

By Snell's law

n_1sin\theta_1=n_2sin\theta_2

Substitute the values

1.33sin58.6=1.6sin\theta_2

sin\theta_2=\frac{1.33sin58.6}{1.6}

sin\theta_2=0.7095

\theta_2=sin^{-1}(0.7095)=45.19^{\circ}

Hence, the angle mad by refracted ray in to the glass with normal=45.19^{\circ}

7 0
4 years ago
If an object is travelling faster than its own sound waves, which of the following is created?
Andrej [43]

Answer:

D

Explanation:

When an object travels faster than the speed of sound, a sonic boom is created. A ring of pressure waves (probably why wave destruction and pressure cooker are options lol) are created, which is why when you see a jet make a sonic boom there looks like a ring shaped cloud behind it. Hope this helps! For further confirmation/information, just look up sonic boom science (or else you will get sonic boom the video game)

7 0
3 years ago
Read 2 more answers
List the effect of heat​
marysya [2.9K]

Answer:

- changes state

- increases volume

- raises the temperature

Explanation:

it is important effect of heat on an object

3 0
3 years ago
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