Answer:
a) v₂ = 4.2 m/s
b) v₂ = 5 m/s
Explanation:
a)
We will use the law of conservation of momentum here:
where,
m₁ = m₂ = mass of bowling pin = 1.8 kg
u₁ = speed of first pin before collsion = 5 m/s
u₂ = speed of second pin before collsion = 0 m/s
v₁ = speed of first pin after collsion = 0.8 m/s
v₂ = speed of second after before collsion = ?
Therefore,
<u>v₂ = 4.2 m/s</u>
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b)
We will use the law of conservation of momentum here:
where,
m₁ = m₂ = mass of bowling pin = 1.8 kg
u₁ = speed of first pin before collsion = 5 m/s
u₂ = speed of second pin before collsion = 0 m/s
v₁ = speed of first pin after collsion = 0 m/s
v₂ = speed of second after before collsion = ?
Therefore,
<u>v₂ = 5 m/s</u>
Answer:
This is green light
Explanation:
According to the photoelectric effect, the maximum kinetic energy of an photoelectron is given by:
Here, E is the energy of the photon and W is the minimum energy required to remove an electron from the surface of the metal, W is defined as:
The Planck – Einstein relation states that the energy of a photon is equal to its frequency multiplied by the planck constant:
Recall that . Replacing (3) and (2) in (1):
Solving for :
This is green light
A fusion reaction is a nuclear process in which the liberated energy a result of the conversion of mass energy.
In a fusion reaction, light nuclei merge to form a single heavier nucleus. The procedure releases electricity because the full mass of the resulting single nucleus is much less than the mass of the 2 original nuclei. The leftover mass becomes power.
Nuclear fusion is a response wherein extra atomic nuclei are blended to form one or greater distinct atomic nuclei and subatomic particles. The difference in mass among the reactants and products is manifested as both the release or absorption of power.
Commonly, fusion reaction isn't always viable because the strongly repulsive electrostatic forces between the definitely charged nuclei save you them from getting close sufficient together to collide and for fusion to arise.
Learn more about fusion reaction here: brainly.com/question/1983482
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Answer:The horizontal forces can be summed as vectors in order to determine the net force. Fnet = ∑Fx = 5.20 N, right - 3.29 N, left = 1.91 N, right.
Explanation:
Answer:
29.6 kg
Explanation:
Centripetal force = mass × centripetal acceleration
F = m v² / r
88.0 N = m (2.50 m/s)² / 2.10 m
m = 29.6 kg