Answer:
A. Tangential velocity of the 100cm position = 1.5g
B. Tangential velocity at 66.67cm equals acceleration due to gravity.
Explanation:
I = I(cm) × M.(1/2)²
I = 1/12.m.(1)² + m(1/2)²
= 1/3m
= 1/2.mg = mg/2
Therefore, ∆= I׶
¶ = ∆/I = (mg/2)/(mg/3) = 3g/2
A. Tangential acceleration of the 100cm position = ∆ × 1
= 1×3g/2 = 1.5g
B. At g = ¶ × 3g/2
¶ = 2/3m
= 2/3×100
= 200/3
Hence, tangential acceleration is equal to = 66.67cm
For the author, science is a field that does not just require the collection and ordering of data about the outside world.
According to the text, science must also be the development of theories about the invisible and non-apparent laws of nature.
<h3 /><h3>What factors drive scientific progress?</h3>
For the author, progress is related to the development of technology, the cultural ideas of society, which change over time, and the logical theories that are developed by scientists.
Therefore, the author proposes a reflection on the challenges of the development of science in today's society, according to the two pillars of physics, which are relativity and quantum theory.
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Since the distance between them is 2.7 meters, the boat will also move a distance of 2.7 meters for Juliet to meet Romeo.
<h3>
DISPLACEMENT</h3>
Displacement is the distance travelled in a specific direction. It is a vector quantity.
Given that Romeo (77kg) sings to Juliet (55kg) in the rear of a rowboat and he is 2.7 m away from Juliet. If after the song, Juliet carefully moves to the rear of the boat (away from the shore) to kiss Romeo which is 2.7 meters away, the distance covered by the 80 kg boat will also be equal to 2.7 m.
Since the distance between them is 2.7 meters, the boat will also move a distance of 2.7 meters for Juliet to meet Romeo.
Therefore, the answer will be 2.7 m
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The wave speed completely depends on the characteristics and properties of the medium . . . physical properties for mechanical waves, electrical properties for electromagnedtic waves.
So if you want to change the speed of a wave, you have to change the medium . . . shoot it through some different kind of stuff. <em>(B) </em>
Answer:
Explanation:
Am ammeter is connected in series with the external resistance to measure its current while the voltmeter is connected in parallel to an external circuit to measure the potential difference across it.
It must be noted that it isn't possible to connect the voltmeter across the electromotive force in the absence of internal resistance.
Also, in measuring current across an external resistance, the galvanometer is connected to a low resistance element called shunt in order to be able to detect a minute current flowing through the load which can not be detected ordinarily by an ammeter.
