Answer: 2.35 seconds rounded
Explanation:
the number unrounded us 2.352941176
Answer:
u have to purchase it via online e-commerce platforms
Answer:
Water expands when it freezes making it less dense than the water from which it freezes. In fact, its volume is a little over 9% greater (or density ca. 9% lower) than in the liquid state. For this reason, ice floats on the water (like an ice cube in a glass of water).
Explanation:
Answer:
Explanation:
When he accelerates the heavy object up , the reading increases because an extra downward normal force acts on it, then scale reading returns to the same reading as when standing stationary, and then decreases as although he is lifting the heavy object , the acceleration is decreasing ,so the extra upward normal force acts.
Answer:
m₁ v = m₂ v
Explanation:
Let's define a system formed by the two objects, for this system the forces during the crash are internal, action and reaction, so that the memento is conserved,
Let's write the initial moment, before shock
p₀ = m₁ v + 0
Final after crash
= 0+ m₂ v
How the moment is preserved
p₀ =
m₁ v = m₂ v
It tells us that peer speed
m₁ = m₂
Since the two masses are the same, it shows that the moment is preserved in this collision.
The kinetic energy is
Initial
K₀ = ½ m₁ v² + 0
Final
= 0 + ½ m₂ v²
K₀ =
½ m₁ v² = ½ m₂ v²
m₁ = m₂
which is true because it indicates that the objects are the same.