Answer:
B
Explanation: a chemical reaction is only the rearrangement of electrons where a nuclear reaction actually changes the elements and thus the nuclei
Answer:
In an a.c generator, slip rings are used.
Adaptation: <em>They</em><em> </em><em>are</em><em> </em><em>not</em><em> </em><em>directly</em><em> </em><em>connected</em><em> </em><em>directly</em><em> </em><em>to</em><em> </em><em>carbon</em><em> </em><em>brushes</em><em>,</em><em> </em><em>hence</em><em> </em><em>donot</em><em> </em><em>come</em><em> </em><em>into</em><em> </em><em>contact</em><em> </em><em>when</em><em> </em><em>the</em><em> </em><em>rectangular</em><em> </em><em>coil</em><em> </em><em>rotates</em><em>.</em>
Explanation:
The magnitude of the second charge given that the first is –6×10¯⁶ C and is located 0.05 m away is +3.0×10¯⁶ C
<h3>Coulomb's law equation </h3>
F = Kq₁q₂ / r²
Where
- F is the force of attraction
- K is the electrical constant
- q₁ and q₂ are two point charges
- r is the distance apart
<h3>How to determine the second charge </h3>
- Charge 1 (q₁) = –6×10¯⁶ C
- Electric constant (K) = 9×10⁹ Nm²/C²
- Distance apart (r) = 0.05 m
- Force (F) = 65 N
F = Kq₁q₂ / r²
Cross multiply
Fr² = Kq₁q₂
Divide both side by Kq₁
q₂ = Fr² / Kq₁
q₂ = (65 × 0.05²) / (9×10⁹ × 6×10¯⁶)
q₂ = +3.0×10¯⁶ C (since the force is attractive)
Learn more about Coulomb's law:
brainly.com/question/506926
200 + 175 + 125 + 100 = 600
Answer:
a. The horizontal component of the velocity is constant so vxt = d where vx = v0 cosθ = 16m/s t = d/v = 2s
b. The height of the ball during its flight is given by y = v0yt + ½ gt2 where v0y = v0sinθ = 12m/s and g = –9.8m/s2 which gives at t = 2s, y = 4.4m. The fence is 2.5m high so the ball passes above the fence by 4.4m – 2.5m = 1.9m
Explanation:
