Because they are larger planets the gravitational pull is heavier and they attract more celestial bodies
The final velocity of object 2 is: 3 m/sec
<h3>What is the conservation of mass?</h3>
According to the rule of conservation of mass, no atoms are created or destroyed during a chemical process. Instead, the atoms combine in a variety of ways to create goods. This explains why each element has the equal amount of atoms on both sides of an equation with balanced symbols.
According to conservation of mass,
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
Given that,
m₁ = 50 kg
m₂ = 75 kg
u₁ = 4 m/s
u₂ = -1 m/s
v₁ = -2 m/s
v₂ = ?
Now, putting the values,
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
(50 × 4) + [75 × (-1)] = [50 × (-2)] + (75 × v₂)
or, 125 = -100 + 75 v₂
or, 75 v₂ = 225
or, v₂ = 3 m/sec.
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Answer : The energy released in first step of thorium-232 decay chain is 
Explanation :
First we have to calculate the mass defect 
.
The balanced reaction is,
Mass defect = Sum of mass of product - sum of mass of reactants
conversion used : 
Now we have to calculate the energy released.
The energy released is
Therefore, the energy released in first step of thorium-232 decay chain is
E =mc²
= (5.0-kg)(3 x 10^8 m/s)²
= (5.0-kg) (9×10^16m²/s²)
E =4.5×10^17 J
Answer:
Heat generated by the current = 1547.89 J
Explanation:
We have equation for heat energy H = mCΔT
Mass of copper = 0.221 kg
Specific heat of copper = 0.093 kcal/kgC° = 389.112 J/kgC°
ΔT = 38 - 20 = 18°C
Substituting in H = mCΔT
H = 0.221 x 389.112 x 18 = 1547.89 J
Heat generated by the current = 1547.89 J
