Answer:
43.3 s
Explanation:
At the maximum height, the velocity is 0 m/s.
Given:
v₀ = 424 m/s
v = 0 m/s
a = -9.8 m/s²
Find: t
v = at + v₀
0 = -9.8t + 424
t ≈ 43.3
The time is approximately 43.3 seconds.
Answer : The rate constant for this reaction at 384.7 K is,
Explanation :
The relation between frequency factor, rate constant and activation energy for a chemical reaction is,
where,
k = rate constant = ?
A = frequency factor =
Ea = activation energy = 12.9 kJ/mol
T = temperature = 384.7 K
Now put all the given values in this formula, we get:
Therefore, the rate constant for this reaction at 384.7 K is,
Maritime polar air mass comes from the northern part of the pasific ocean and that air mass goes to Utah.
Answer:
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Answer:
The Total Momentum before and after collision remains the same.
Explanation:
Note that the balls have the same masses.
A moving cue ball has an initial momentum. After every collision with another stationary ball, the momentum, which is the product of their mass and velocity, of the balls is conserved. This simply means that the total momentum before the collision is the same as the total momentum after the collision.
This also means that the energy must be conserved as well. The balls cannot fling away from each other with more energy than you give them.