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3 years ago

How does an energy pyramid help to describe energy flow in a food web.?

1 answer:

7 0

An energy pyramid portrays the flow of energy by displaying the plants at the bottom, who get the most energy from the sun, and then gradually moving up to herbivores as it shows the transferal of energy from the plants to the herbivores and how the amount of energy received is significantly less than the original

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Why do different stars have different life cycles

lana66690 [7]

The answer is shape is determined. A stars life cycle is determined in its size

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2 years ago

Do you know any good books about physics and math?

horrorfan [7]

What Is Mathematics? Is a book about math

A book about physics /A Brief History of Time

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2 years ago

According to Hooke's law

SOVA2 [1]

Answer:

According to Hook's law, we know,

strain/stress =Constant

Explanation: So, the ratio between stress and strain is always constant.

So, if stress is increased, then strain changes in that way so that this ratio always remains constant.

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2 years ago

The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle connects to the bones of th

SVETLANKA909090 [29]

Answer:

$F_b$ = 1647.92 N

Explanation:

Given:

length of the arm, r = 0.465 m

distance of forearm from elbow, r' = 2.15 cm = 0.0215 m

Mass of the forearm, M = 2.45 kg

Mass of the object, m = 6.55 kg

Let, the Force by bicep be, $F_b$

under the motionless condition, the net moment about elbow is zero

thus,

$F_b$ × 0.0215 - Mg × (0.465/2) - mg × (0.465) = 0

$F_b$ × 0.0215 - 2.45 × 9.8 × (0.465/2) - 6.55 × 9.8 × (0.465) = 0

$F_b$ × 0.0215 - 5.582 - 29.848 = 0

$F_b$ = 1647.92 N

hence, the force exerted by the elbow is 1647.92 N

4 0

3 years ago

Read 2 more answers

Define the term antinode and explain how standing waves form.

Otrada [13]

Answer:

standing wave, also called stationary wave, combination of two waves moving in opposite directions, each having the same amplitude and frequency.

For oppositely moving waves, interference produces an oscillating wave fixed in space. fixed nodes in a standing wave. Location of fixed nodes in a standing wave

these are the points that undergo the maximum displacement during each vibrational cycle of the standing wave. In a sense, these points are the opposite of nodes, and so they are called antinodes. A standing wave pattern always consists of an alternating pattern of nodes and antinodes

Explanation:

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2 years ago