b. They contribute to a balance or equilibrium of Earth's materials.
c. Old material is disposed of, never to be used again, and new material is created.
d. The cycles are powered by the earth's rotation and orbit.
Answer: a. They continuously recycle Earth's materials.
b. They contribute to a balance or equilibrium of Earth's materials.
Earth's hydrologic cycle involves the cycling of water. A natural replenishment process of water. Rock and tectonic cycles causes replenishment of rocks and geospheres. These cycles allows the generation of new materials. They contribute to a balance or equilibrium of Earth's material, for example magma release from earth crust during volcanic eruptions can destroy all nearby and superficial rocks, but when the magma solidifies to form new rocks. Therefore, materials which are destroyed are again created hence, equilibrium remains maintained.
Answer:
. They continuously recycle Earth's materials.
b. They contribute to a balance or equilibrium of Earth's materials.
Explanation:
Answer:
4.281 kgm/s upward
Explanation:
Impulse:This can be defined product of force and time. The S.I unit of impulse is Ns.
From Newton's second law of motion,
Impulse = Change in momentum.
I = mΔv....................... Equation 1.
Where m = mass of the ball, Δv = change in velocity of the ball
and Δv = v -u
Where u = velocity of the ball before it hit the floor, v = velocity of the ball after if hit the floor
I = m(v-u) -------------- Equation 2
But
the initial kinetic energy of the ball = potential energy at the initial height (1.2 m above)
1/2mu² = mgh₁
Where h₁ = initial height. or height of the ball before collision
making u the subject of the equation,
u = √(2gh₁)........................ Equation 3
Where h₁ = 1.2 m g = 9.81 m/s²
Substitute into equation 3
u = √(2×1.2×9.81)
u =√(23.544)
u = -4.852 m/s.
Note: u is negative because the ball was moving downward at the first instance.
Similarly,
v = √(2gh₂)............................. Equation 3
h₂ = height of the ball after collision
Given: h₂ = 0.7 m, g = 9.81 m/s²
Substitute into equation
v = √(2×9.81×0.7)
v = √13.734
v = 3.71 m/s.
Also given: m = 0.5 kg,
Substituting into equation 2
I = 0.5(3.71-(4.852)
I = 0.5(8.562)
I = 4.281 kgm/s. Upward.
Thus the impulse = 4.281 kgm/s upward
B. protostar.
C. red giant.
D. nebula.
Answer:
They will interfere to create a crest with an amplitude of 2.
Explanation:
If the crest of one wave meets the trough of another wave, destructive interference occurs and the combined amplitude will be less than that of either wave alone. If the amplitudes of the two waves are equal, when the crest and trough superimpose, the combined amplitude will be zero.
Answer: If a door is perceived as a rectangle even after being viewed from different angles, it is likely because our brain is applying a cognitive concept known as "shape constancy." Shape constancy is a perceptual phenomenon where we tend to perceive an object's shape as being consistent and unchanged, even when viewed from different angles or under varying lighting conditions.
This phenomenon occurs because our brains are constantly processing the visual information we receive and attempting to make sense of it. When we encounter a door, our brain has a preconceived notion that a typical door is rectangular in shape. As a result, even when we see the door from an angle that might distort its appearance, our brain adjusts the perception to maintain the idea that it is a rectangle.
This concept of shape constancy is a part of how our brains simplify the complex visual information we receive from the environment. It helps us recognize objects more easily and efficiently, even when they are presented in different orientations or lighting conditions.
In reality, the door may not appear as a perfect rectangle when viewed from various angles, but our brain's tendency to maintain shape constancy can override these visual discrepancies, and we continue to perceive it as a rectangle. It's important to note that this phenomenon is not limited to doors; it applies to many objects in our everyday lives, helping us make sense of the world around us.
Perception of a door as a rectangle from different angles is due to the flexibility of our visual perception, allowing our brain to adjust based on various factors. This can be observed in experiments where subjects acclimate to visual distortions over time.
When we view a door from different angles, it may still appear as a rectangle due to the way our brains perceive visual information. Our brains automatically adjust our perception based on various factors like lighting conditions, distance, and movement. This flexibility in perception allows us to make sense of the world around us. For example, in an experiment where subjects wore prism glasses to invert their visual field, initially, they perceived objects differently, but after acclimation, their perception returned to normal.
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