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klasskru [66]
1 year ago
13

Question

Biology
1 answer:
Vlad [161]1 year ago
5 0

Explanation:

to get people to ask their doctor about drugs that might treat a condition

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During an experiment a scientist observed prokaryotes that lived near volcanic vents deep in the ocean the scientist most likely
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❖ The correct answer is B. Chemoautotrophs.

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4 0
3 years ago
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Una carga de 50 N unida a un resorte que cuelga verticalmente estira el resorte 5cm. El resorte se coloca ahora horizontalmente
ELEN [110]

Answer:

-110 N

Explanation:

Una carga de 50 N unida a un resorte que cuelga verticalmente estira el resorte 5cm. El resorte se coloca ahora horizontalmente sobre una masa y se estira 11cm. ¿Qué fuerza se requiere para estirar ese resorte en esa cantidad?

Solution:

La constante de resorte (k) es la relación entre la fuerza (F) y la extensión (d) como resultado de la fuerza aplicada, por lo tanto:

k = F / d

Dado que F = 50 N, d = 5 cm = 0.05 m. Por eso:

k = F / d = 50 N / 0.05 = 1000 N / m

La fuerza (F) requerida para provocar un estiramiento de 11 cm se da como:

F = -kx

x = 11 cm = 0,11 m. Por eso:

F = -kx = -1000 * 0,11 = -110 N

El signo negativo significa que el objeto se tira hacia el resorte.

8 0
3 years ago
The secretions of the adrenal medulla act to supplement the effects of ________.
Nutka1998 [239]

Answer:

sympathetic stimulation

Explanation:

Under stress or emergency conditions, the preganglionic neurons of the sympathetic division release acetylcholine. Acetylcholine stimulates secretion and release of epinephrine and norepinephrine from the adrenal medulla. These hormones enhance the effects of the sympathetic division of the autonomic nervous system (ANS) during stress. Epinephrine and norepinephrine augment the fight-or-flight response as they increase the heart rate and force of contraction, the output of the heart, and blood pressure. They also increase blood supply to the heart, liver, and adipose tissue. The airways to lungs become dilated and there are increase blood levels of glucose and fatty acids.

7 0
3 years ago
What is the name of the phylum where starfish are found? Why is this an appropriate name for the phylum?
Assoli18 [71]

Answer:

Starfish are also referred to as sea stars because of their star-shaped appearance. They are a part of the phylum Echinodermata and are related to sand dollars, sea urchins, and sea cucumbers.

Explanation:

3 0
2 years ago
When eddies in a river whirl around sand and gravel, what do they cause? potholes stream piracy regolith removal headward erosio
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3 years ago
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