2. A pendulum is built by attaching a 1-kg mass to the end of a 120 cm-long string. The mass is
displaced 30 cm from the center and released. It begins to swing back and forth, taking 2 seconds
to travel from one side to the other and back again. Which of the following describes the period
of this pendulum?
F. 1 kg
G. 2 s
H. 30 cm
J. 120 cm
Answers: 3
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Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories
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Blood pressure the total amount of blood the heart pumps in one minute 2. cardiac output the number of times your heart beats in a minute 3. dilate the amount of blood that the heart can pump in a single beat 4. heart rate the force exerted on the walls of the blood vessels by the blood that moves through them 5. stroke volume to widen or get larger in size
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Physics, 22.06.2019 18:30
Both speed and velocity measure how fast something is moving. however, since speed is not a it does not require a(n question 6 options: a) quantity , unit b) magnitude, unit c) scalar, direction d) vector, direction
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2. A pendulum is built by attaching a 1-kg mass to the end of a 120 cm-long string. The mass is
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