Physics, 31.03.2020 02:25 mariaaalopezz

The perceived pitch of a tone is largely determined by its * 0 points (A) loudness (B) timbre (C) amplitude (D) complexity (E) frequency 11. Balance is influenced by the * 0 points (A) cochlea (B) basilar membrane (C) eardrum (D) auditory nerve (E) semicircular canals 15. The biological clock that operates in human beings to adjust their functioning to night-and-day periodicity is referred to as * 0 points (A) spontaneous neural activity (B) the biofeedback monitor (C) a fixed-interval schedule (D) a circadian rhythm (E) active consciousness 16. Visual acuity is best in the * 0 points (A) lens (B) iris (C) pupil (D) fovea (E) cornea 18. Which of the following systems produces, circulates, and regulates levels of hormones in the body

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Answer from: dondre54

E. Frequency

E. Semicircular canals

D. A circadian rhythm

D. Fovea

Endocrine system.

Explanation:

Pitch, in speech, the relative highness or lowness of a tone as perceived by the ear, which depends on the number of vibrations per second produced by the vocal cords ie frequency related scales.

The ear is a sensory organ that picks up sound waves, allowing us to hear. It is also essential to our sense of balance: the organ of balance (the vestibular system) is found inside the inner ear. The vestibule is the region of the inner ear where the semicircular canals converge, close to the cochlea (the hearing organ).

A circadian rhythm is the 24-hour cycle that regulates the timing of processes like eating, sleeping, and temperature. This ensures that there is a periodicity with necessary biological processes.

The area of greatest visual acuity is situated inside the macula called fovea. It has the maximum number of rods responsible for vision.

The endocrine system is a chemical messenger system comprising feedback loops of the hormones released by internal glands of an organism directly into the circulatory system, regulating distant target organs.

Answer from: Quest

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

happy to

pls mark as brainliest

Answer from: Quest

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm. the wire diameter is d = 0.9 mm. the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2) in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

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