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3 years ago

1. How is the secretion of TSH regulated under normal conditions?

1 answer:

lisabon 2012 [21]3 years ago

7 0

At the pituitary level, TSH is a glycoprotein secreted by the basophilic thyrotropes.TSH secretion is regulated by negative feedback of thyroid hormones, i.e. the higher the serum levels of these hormones, the lower TSH release and vice versa, and stimulation from TRH. ... Cells of the thyroid gland contain TSH receptors....did i help?

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What is the medium of ocean waves? I put extra points so

Liono4ka [1.6K]

The medium of ocean waves are In the case of a water wave in the ocean, the medium through which the wave travels is the ocean water. In the case of a sound wave moving from the church choir to the pews, the medium through which the sound wave travels is the air in the room.

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3 years ago

I WILL GIVE BRAINLIEST

11111nata11111 [884]

Answer:

A, B, F

Explanation:

I believe these are the answers, sorry if it is incorrect.

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3 years ago

1) A plane lands on a runway with a speed of 125 m/s, moving east, and it slows to a stop in 13.0 s. What is the magnitude (in m

valentina_108 [34]

Answer: 1) a = 9.61m/s² pointing to west.

2) (a) Δv = - 37.9km/s

(b) a = - 6.10⁷km/years

Explanation: Aceleration is the change in velocity over change in time.

1) For the plane:

$a=\frac{\Delta v}{\Delta t}$

$a=\frac{125}{13}$

a = 9.61m/s²

The plane is moving east, so velocity points in that direction. However, it is stopping at the time of 13s, so acceleration's direction is in the opposite direction. Therefore, acceleration points towards west.

2) Total change of velocity:

$\Delta v = v_{f}-v_{i}$

$\Delta v = -17.1-(+20.8)$

$\Delta v= -37.9$ km/s

The interval is in years, so transforming seconds in years:

v = $\frac{-37.9}{3.15.10^{-7}}$

$v=-12.03.10^{7}$ km/years

Calculating acceleration:

$a=\frac{-12.03.10^{-7}}{2.01}$

$a=-6.10^{7}$

Acceleration of an asteroid is a = -6.10⁷km/years .

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3 years ago

Prove the correctness of this equation s=vt + 1/2at

Kaylis [27]

Answer:

The formula is dimensionally correct.

Explanation:

Given

$s = ut + \frac{1}{2}at^2$

Required

Prove its correctness

Write out the dimension of each:

$s = M^0LT^0$ --- displacement

$ut = M^0LT^{-1} * T$ --- velocity * time

$\frac{1}{2}at^2 = M^0LT^{-2} * T^2$ --- acceleration * square of time

The expression becomes:

$s = ut + \frac{1}{2}at^2$

$M^0LT^0 = M^0LT^{-1} * T + M^0LT^{-2} * T^2$

Apply law of indices

$M^0LT^0 = M^0LT^{-1+1} + M^0LT^{-2+2}$

$M^0LT^0 = M^0LT^{0} + M^0LT^{0}$

$M^0LT^0 = M^0LT^{0}$

Both sides of the equation are equal

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3 years ago

toy car A drives with a steady force of 35N and covers 2000 m with fully charged battery. toy car B drives with a steady force o

marissa [1.9K]

Answer:

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2 years ago