Answer:
Falsa
Explanation:
Because with out calculation we can't find density
As per the question, the initial velocity of a object[u] = 0
The acceleration of the object
The time [t] = 12.3 s
We are asked to calculate the velocity of the object at that time.
From equation of kinematics we know that-
V = u+at [Where v is the final velocity of the particle]
=0+4.6*12.3 m/s
=56.58 m/s [ans]
Assuming that the distance from the heart to the brain is 30 centimeters, and the motion of blood in the aorta is 30 centimeters per second. There fore to solve for the time needed for the blood to reach the brain is:
t = 30 centimeters / 30 cm per second
t = 1 second.
The regular heart rate is 70 beats per minute, solve for the equivalent number of beats:
number of beats = 70 beats / minute * (1 min / 60 seconds) * 1 second
number of beats = 1.2 beats
Therefore, it takes 1.2 beats for the heart to pump blood to the brain.
Pitch
Explanation:
The pitch of a sound wave is the perceived frequency of a sound wave.
The quality of sound that makes it discernible to the ear is the pitch.
- Sound wave is a longitudinal wave that is transmitted by series of rarefaction and compression.
- Pitch helps to distinguish between the different sound qualities.
- Pitch is how high or low sound is perceived.
learn more:
Pitch brainly.com/question/9772227
Sound wave brainly.com/question/2845448
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