Answer:
The correct answers are
a. periodic but not oscillatory (I.e. the hand does not oscillate or undergo oscillations).
b. periodic and also oscillatory.
Explanation:
Oscillatory motion are motion that involves the repeated forward and backward motion of an object or mater between two position, points or states. An oscillatory motion that repeats itself at a regular interval or cycle is a periodic oscillatory motion. Examples of periodic oscillatory motion includes, a pendulum, the upward and downward motion of a weighted spring or a sine wave
while periodic motion is the repeated movement of an object over a specific period of time. The period is the time for the motion to repeat itself measure in seconds.
The motion of the hand of the clock is periodic as it revolves round every minute, but it is in a clockwise direction hence it is not oscillatory
while the motion f a person rocking back and forth on a rocking chair to the beat of a song is periodic and oscillatory
The sum of two vectors A and B is a resultant vector R, where R = A + B. If vectors A and B are plotted with their tails at the origin and heads at points (x1, y1) and (x2, y2), respectively, the resultant vector R ends at point (x1+x2, y1+y2). This represents the sum of the individual components of vectors A and B.
In vector addition, the equation for the sum of two vectors A and B can be generally represented as R = A + B, where R is the resultant vector. If the vectors are plotted with their tails at the origin and their heads ending at points (x1, y1) for Vector A and (x2, y2) for Vector B, the resultant vector, R, will end at the point (x1+x2, y1+y2). In other words, the components of the resultant vector are simply the sum of the components of the original vectors.
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Answer:
R=-x-4y
Explanation:
Because i said so
Competing theories are necessary to transform a theory into a law.
Competing theories generate controversy that helps popularize ideas.
Competing theories allow scientists to combine the most interesting aspects of both theories.
Answer:
Competing theories can be a source of new, testable ideas.
Explanation:
Theory is the set of knowledge that seeks to explain, with a high degree of accuracy, all-encompassing phenomena of nature, that is, it is different from the meaning of the word "theory" used in everyday life, when we say that something "is only a theory "in the sense that it is a mere speculation.
Competing theories present a much larger set of knowledge, which gives the universe a source of new and testable ideas
It does not change.
B.
From C to D, it increases.
C.
From C to D, it decreases.
D.
It continues to increase as it swings back and forth.