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Damm [24]
3 years ago
7

The heart has structures called___. This allows the blood to move in one direction.

Chemistry
2 answers:
IrinaVladis [17]3 years ago
7 0
The anwser is valves
Romashka-Z-Leto [24]3 years ago
4 0

Answer:

Valves

Explanation:

Valves maintain direction of blood flow

As the heart pumps blood, a series of valves open and close tightly. These valves ensure that blood flows in only one direction, preventing backflow. The tricuspid valve is situated between the right atrium and right ventricle.

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An inherited characteristic of an organism is called a ___________________.
Firlakuza [10]

Answer:

fitness. the ability of an organism to survive and reproduce in its environment. adaptation. the inherited characteristic that increases an organism's chance of survival.

5 0
3 years ago
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Suppose that a wave has a period of 0.03 seconds what is its frequency be sure to show the steps for your work
Reil [10]

Answer:

f = 33.34 Hz

Explanation:

A wave has a period of 0.03 seconds. It is required to find the frequency of a wave. The relation between time period and frequency is inverse. The time period of a wave is given by :

T = 1/f, f = frequency of wave

f=\dfrac{1}{T}\\\\f=\dfrac{1}{0.03}\\\\f=33.34\ Hz

So, the frequency of the wave is 33.34 Hz.

5 0
3 years ago
What is the wavelength of infrared radiation with a frequency of 3.85 x 10^12 Hz?
ELEN [110]

Answer:

Wavelenght is 7,79x10⁻⁵ m

Explanation:

The equation that connects wavelentgh (λ) and frequency (ν) is:

λ=c/ν

Where c is speed of light (3x10⁸ m/sec) and λ is expressed in lenght´s units and ν is expressed in "time⁻¹ " units (for example, sec⁻¹)

According to the details, if we just replace the given value of frequency, we just obtaing wavelenght data:

λ= (3x10⁸ m/sec)/(3,85x10¹² sec⁻¹) = 7,79x10⁻⁵ m

3 0
3 years ago
If you increase the force on an object, its acceleration increases. True or false
lions [1.4K]

Answer:

true

Explanation:

from Newton's second law of motion ,we can understand that acceleration of a body is directly proportional to the force applied on it and inversely proportional to its mass ,so as the force applied increase,the acceleration also increases

8 0
3 years ago
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kompoz [17]
Answer is d.........
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3 years ago
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