Answer:
A - Sublimation
B - Evaporation
C - Melting
Explanation:
The state of change present in A is Sublimation. Dry Ice is the most common example of Sublimation of everyday life
The state of change present in B is evaporation. Boiling water into water vapor is something that anyone can see.
The state of change present in C is called Melting. Think of Ice melting into a pool of water as the ice heats up.
D) because the refrigerator was much heavier than the other objects
The movement of the plates creates three types of tectonic boundaries: convergent, where plates move into one another; divergent, where plates move apart; and transform, where plates move sideways in relation to each other. They move at a rate of one to two inches (three to five centimeters) per year.
Protons have a positive 1 charge while neutrons do not have a charge; they are neutral
Answer:
3.456 × 10⁻⁴³ J
Explanation:
The work done in bringing two charges q₁ and q₂ separated by a distance, r together is W = kq₁q₂/r. With the first charge q₁ in place, the work done in bringing the second charge into the vertex of the equilateral at a distance, r is W₁₂ = kq₁q₂/r. Since the first and second charges are in place, the work done in bringing the third charge q₃ in place is work done W₁₃ between q₁ and q₃ = kq₁q₃/r plus work done W₂₃ between q₂ and q₃ = kq₂q₃/r. So the total work done in assembling the atomic nucleus is W = W₁₂ + W₁₃ + W₂₃ = kq₁q₂/r + kq₁q₃/r + kq₂q₃/r. Since q₁ = q₂ = q₃ = q = 1.6 × 10⁻¹⁹ C, W = 3kq²/r. Since r = side of equilateral triangle = 2.0 × 10⁻¹⁵ m. W = 3 × 9 × 10⁹ × (1.6 × 10⁻¹⁹)²/2.0 × 10⁻¹⁵ = 3.456 × 10⁻⁴³ J ≅ 3.46 × 10⁻⁴³ J