Force applied by the lever to the object=2700 N
Explanation:
Mechanical advantage=
mechanical advantage= 5.4
effort force= 500 N
we need the load force
5.4= load/500
load=2700 N
Thus the force applied by the lever to the object=2700 N
Answer:
The big rip theory
Explanation:
I believe what you are referring to is the big rip theory, in which the universe expands faster than the speed of light Kurzgesagt refers to it as a "horizon" but in reality it's a little more complicated than that. Eventually the expansion of the universe will accelerate far beyond the speed of light creating space between molecules until eventually all matter is fleeting and the entire universe is an endlessly vast cosmic void with not but the occasion molecule left from a time when things weren't so lonely.
If the amplitude is doubled than the intensity will become 4 times of amplitude.
<h3>What is meant by intensity? </h3>
Intensity is the quality of being very strong, concentrated or difficult or the degree to which something is difficult or strong.
The intensity of a sound wave exists described as the amount of energy transmitted through a unit area per unit time in the direction of travel; it is a vector quantity with both a magnitude and a direction.
The amplitude of the sound waves and how far they have travelled from the sound source.
Intensity is directly proportional to the square of the amplitude .
So, if the amplitude is doubled than the intensity will become 4 times of amplitude.
To learn more about Intensity refer to:
brainly.com/question/17323212
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Answer: 2.67 k/s^2
Explanation:
Given that:
Initial velocity V1 = 1.0 k/s
Final velocity V2 = 1.8 k/s
Time taken T = 0.3 seconds
acceleration of the meteoroid = ?
Since acceleration is the rate of change of velocity per unit time
i.e acceleration = (V2 - V1) / T
Acc = (1.8 k/s - 1.0 k/s) / 0.3 seconds
Acc = (0.8 k/s / 0.3 seconds)
Acc = 2.67 k/s^2
Thus, the acceleration of the meteoroid is 2.67 k/s^2
Answer:
He is incorrect. Dissolving salt in water and evaporation of the water are both physical changes. The reappearance of salt is evidence that the change was reversible by a physical change, so it could not be a chemical change.