Which of the following are early clues that signal an earthquake may occur? Select all that apply. Changes in magnetic properties of rock Movement of magma Decrease in well water levels Increase in sulfur dioxide and carbon dioxide ground emissions Increases in radon gas in groundwater Foreshocks
Answers
The following answers apply;
- Changes in magnetic properties of rock
- Decrease in well water levels
- Increases in radon gas in groundwater
- Foreshocks
These other choices may be good indicators of an imminent volcanic eruption;
Movement of magma
Increase in sulfur dioxide and carbon dioxide ground emissions
Answer:
correct order for early clues that notify about earthquake is:
change in magnetic properties of rock
Decrease in water levels in well
increase in the amount of radon gas in subsurface water foreshocks
Explanation:
correct order for early clues that notify about earthquake is:
change in magnetic properties of rock
Decrease in water levels in well
increase in the amount of radon gas in subsurface water foreshocks
The other that can take place the position of clues for volcanic eruption are
Movement of magma
increase in SO_2 and CO_2 emission from grounds
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In the above lightwave the property labeled a determines which characteristic of visible light
The state at which one objects distance from another object is changing
B: 60 min
C: 45 min
D: 15 min
Answers
The answer is B) 60 min.
Given: ME=6.0x1024 kg and RE=6.4x106m
Answers
Answer:
3.8 m/s²
Explanation:
g = GM / R²
g = G (0.11 ME) / (0.53 RE)²
g = 0.39 G ME / RE²
g = 0.39 (9.8 m/s²)
g = 3.8 m/s²
Answer:
vote me brainliest! Please!
simple put is 3.8 m/s²
took it on edge 2020
Answers
no gravity or dark matter
the answer for ur question
no gravity or dark matter
Answers
Answer: B. The earth pulls more on the shuttle
Explanation:
Gravitational pull is directly proportional to the mass of the pulling body. In this case, earth's mass is larger than moon's mass, therefore, earth's gravitational pull on satellite will be greater than moon's gravitational pull on satellite.
B) An object at rest has an instantaneous acceleration of zero.
C) Instantaneous acceleration is always changing.
D) An object that is accelerating is always changing speed.
Answers
Final answer:
Among the statements, B) An object at rest has an instantaneous acceleration of zero, is correct. This is because when an object is at rest, it isn't moving, and hence, no change in velocity and no acceleration. Other statements do not hold true in all cases.
Explanation:
The statement that is true among the options provided is B) An object at rest has an instantaneous acceleration of zero. When an object is at rest, it means it's not moving, and therefore, it doesn't have any acceleration. Acceleration is the rate at which an object changes its velocity. Thus, if an object is not moving, there is no change in velocity and hence, no acceleration. As for the other statements, A, C, and D, they do not hold true for all cases. An object can be accelerating while moving in a straight line (changing speed but not direction). Also, instantaneous acceleration isn't always changing - it can remain constant. Lastly, an object that is accelerating isn't always changing speed, as it could be moving in a circle at a constant speed.
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Final answer:
The only fully accurate statement is that an object at rest has an instantaneous acceleration of zero, as no change in velocity indicates no acceleration. Other statements have instances where they might not always be true in the field of physics.
Explanation:
According to the fundamentals of Physics, only option B is fully correct: An object at rest has an instantaneous acceleration of zero. This is because an object at rest will stay at rest, with no change in velocity that would constitute acceleration.
Option A) is not entirely correct. An object that is accelerating may change direction, but not always. For example, a car can accelerate while driving straight.
Option C) is also not absolute. Instantaneous acceleration could be changing, but it could also be a constant rate if an object is moving with a uniform acceleration.
Finally, option D) is like A, is not always true: an object that is accelerating doesn't necessarily have to be changing speed. It could also be changing direction while maintaining the same speed.
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