Answer: Length, thickness, and temperature
Explanation:
I did it
<h2>
Answer: The "raising pudding" atomic model</h2>
Explanation:
<u>During the 19th century the accepted atomic model, was Dalton's atomic model</u>, which postulated the atom was an <u>"individible and indestructible mass".</u>
However, at the end of 19th century J.J. Thomson began experimenting with cathode ray tubes and found out that atoms contain small subatomic particles with a negative charge (later called <u>electrons</u>). This meant the atom was not indivisible as Dalton proposed. So, Thomson developed a new atomic model.
Taking into consideration that at that time there was still no evidence of the atom nucleus, Thomson thought the electrons (with negative charge) were immersed in the atom of positive charge that counteracted the negative charge of the electrons. <u>Just like the raisins embedded in a pudding or bread.
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That is why this model was called the <u>raisin pudding atomic model.</u>
Answer:
The current in the circuit at a time interval of τ seconds after the switch has been closed is 0.123 A
Explanation:
The time constant for an R and C in series circuit is given by τ = RC.
R = 3000 ohms, C = 0.5 × 10⁻⁶ F = 5.0 × 10⁻⁷ F
τ = 3000 × 5 × 10⁻⁷ = 0.015 s
The voltage across a capacitor as it charges is given be
V(t) = Vs (1 - e⁻ᵏᵗ)
where k = 1/τ
At the point when t = τ, the expassion becomes
V(t = τ) = 1000 (1 - e⁻¹) = 0.632 × 1000 = 632 V
Current flows as a result of potential difference,.
Current in the circuit at this time t = τ is given by
I = (Vs - Vc)/R
Vs = source voltage = 1000 V
Vc = Voltage across the capacitor = 632 V
R = 3000 ohms
I = (1000 - 632)/3000 = 0.123 A
B. Physical Change - T<span>he molecules do not change shape or size. They do not contract or expand only.</span>
Answer:
13.26°
Explanation:
Using Snell's law as:
Where,
is the angle of incidence ( 35.0° )
is the angle of refraction ( ? )
is the refractive index of the refraction medium (glass, n=2.5)
is the refractive index of the incidence medium (air, n=1)
Hence,
Angle of refraction= sin⁻¹ 0.2294 = 13.26°.
<u>13.26° is the angle of the beam with the normal in the glass.</u>
