All of the orbitals in a given subshell have the same value of the "<span>magnetic and principal" quantum number
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Answer:
The speed of the cart decreases
Explanation:
The track is frictionless, so we can consider the cart as isolated system (no external forces acting on it): therefore, the momentum of the cart is conserved
where m is the mass and v the speed of the cart.
When it starts raining, some water falls into the cart: this means that the mass of the cart, m, increases. But we said that the momentum, p, must remain constant: in order for that to happen, this means that the speed of the cart, v, must decrease (because the relationship is an inverse relationship, so if m increases, v must decrease).
Answer:
Explanation:
We start by calculating the speed of the egg when it touches the upper surface of the carpet. This can be done by using the law of conservation of energy: in fact, the initial gravitational potential energy of the egg is converted into kinetic energy at the moment of impact, so we can write
where
m is the mass of the egg
is the acceleration of gravity
h = 0.35 m is the initial height of the egg
v is the speed as it touches the carpet
Solving for v,
Now we analyze the motion of the egg through the carpet. The minimum acceleration will be obtained when the egg cover the whole tickness of the carpet to stop, that is
s = 3.0 cm = 0.03 m
And the egg must stop after covering this distance, so the final velocity will be
v' = 0
To find the acceleration, we can use the suvat equation:
and solving for a,
You would do mass x distance which is 3.8 kg x 12m which equals A. 45.6 J.