Answer: the kinetic energy possessed by the bullet is 1562.5 Joules (J).
Explanation:
Answer:
Washing your hands properly.
G. Does the material feel hard to the touch?
H. Will the material float in water?
J. Does the material feel rough or smooth?
Answer:
i think the answer is f as metals are malleable and ductile
Answer:
F
Explanation: Most metals carry the trait that they are malleable and ductile.
O High temperatures and location in high latitudes
O Moderate temperatures and location in mid to high latitudes
O Warmer temperatures and location around the equator
Answer: D
Explanation:
Answer: High temperatures and location in high latitudes
Explanation:
´ 1 _____/60 _____ = 15 _____
Answer:
916.7 m/s
Explanation:
Given:
The value of speed = 55 km/hr
To determine:
The corresponding value in meters/second i.e m/s
Formula:
Step 1:
Convert km to m
1 km = 1000 m
Therefore, 55 km = 55 km * 1000 m/1 km = 55,000 m
The speed now is = 55,000 m/hr
Step 2:
Convert hr to sec
60 sec = 1 hr
Speed = 55,000 m/hr * 1 hr/60 sec = 916.7 m/s
Answer:
Due to deficiency of Oxygen in atmosphere.
Explanation:
Oxidation is defined in two ways, 1) The addition of Oxygen and Removal of Hydrogen 2) The removal of electrons.
We will discuss the first definition for this question. The addition of oxygen to various compounds results in the oxidation of that compound.
Example: Oxidation of Methane;
CH₄ + 2 O₂ → CO₂ + 2 H₂O
In this example oxygen is added to methane and hydrogen is being removed from methane.
Oxidation type chemical weathering common more than 2 billion years ago because of less amount of Oxygen in atmosphere and the oxygen which was produced by plants reacted with different metals like Iron forming precipitates which precipitated to the bottom of oceans.
Oxidation type chemical weathering was not common more than 2 billion years ago due to the scarcity of free oxygen in the Earth's atmosphere. The early atmosphere was anoxic, and it was only with the evolution of cyanobacteria that oxygen began to accumulate. This oxygen increase allowed for the evolution of more complex life forms and facilitated oxidation type chemical weathering.
The main reason why oxidation type chemical weathering wasn't common more than 2 billion years ago is the scarcity of free oxygen in the Earth's atmosphere during that period. Studies of the chemistry of ancient rocks show that despite the presence of plants releasing oxygen through photosynthesis, Earth's atmosphere and oceans lacked abundant free oxygen until about 2 billion years ago. The oxygen gas was rapidly removed through chemical reactions with Earth's crust.
Moreover, the early atmosphere was anoxic, meaning it had no molecular oxygen. As a result, only anaerobic organisms, which can grow without oxygen, could live. It was only later with the evolution of cyanobacteria, also known as blue-green algae, that oxygen began to accumulate in the atmosphere.
This increase in atmospheric oxygen allowed the evolution of more complex life forms and the development of more efficient oxygen-utilizing processes. It also facilitated the oxidation type chemical weathering that we see today, which requires free oxygen to occur.
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