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vredina [299]
2 years ago
12

Https://youtu.be/9TbCQi-cVdY​

Biology
1 answer:
Nataliya [291]2 years ago
4 0
What is it????????????????
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A wave with a frequency of 400 Hz is traveling at a speed of 100 m/s. What is the ​wavelength​? ​

shutvik [7]

The velocity (speed) of a sound wave (any wave in fact) is related to its frequency and wavelength by the equation . This is easy to remember since it's a distance divided by a time because frequency is the inverse of the period.

Since for sound traveling through the given solid object we have that  and , the speed of sound will be:      

this is what i looked up and got

5 0
3 years ago
What evolutionary development allowed plants to grow tall? see concept 29.3 (page 626)?
aivan3 [116]
If your choices are the following:
<span>A. rhizoids
B. sporophylls
C.leaves
D.the waxy cuticle
E. lignified vascular tissue

Then the answer is E.</span>
4 0
3 years ago
What type of isolation needs to occur for speciation to happen?
natita [175]
"REPRODUCTIVE ISOLATION" needs to occur for speciation to happen.....
8 0
3 years ago
According to the _____ theory, when a physiological need, such as hunger, creates an aroused tension state, it drives the organi
madreJ [45]

Answer:

the drive-reduction theory

Explanation:

The drive-reduction theory is one of the theories of motivation.

This theory contains the idea that a physiological need creates a drive, which in turn motivates an organism to satisy their need.

The theory targets homeostasis or biological balance.

When there is a need such as lack of water, the need would cause a drive to be developed (thirst).

The drive would activate a response (search for water to drink).

The response is then terminated when the need has been satisfied.

4 0
2 years ago
1. A normal mammalian cell will shrink if it is placed into_________. (Assume all solutes are non-penetrating) A. pure water B.
GrogVix [38]

Answer:

B. 50 mM glucose; E. 300 mM glucose

Explanation:

In order for the cell to shrink the concentration of solutes in the blood should be above normal or higher than the intracellular concentration, so that water moves from the inside of the cell to the outside by the process known as osmosis.

The normal blood levels of NaCl = ~ 154 mM; therefore A, C and D will not cause any shrinkage.

The normal blood levels of glucose = ~ 3.9 to 7.1 mM; therefore water would move from the intracellular to the extracellular space since the solutes are 10x higher outside the cell, causing shrinkage of the cell.

4 0
3 years ago
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