A good sign that cardiovascular exercise is occurring is that you _____.

2 answers:

4 0

Are breathing hard. This is because cardiovascular exercise makes the heart beat faster which in turn creates a need for more air.

EleoNora [17]3 years ago

4 0

Answer: are breathing much faster

Explanation:

Exercise is a physical activity which increases the rate of respiratory and cardiovascular activity of the body. The cardiovascular exercise is likely to increase the rate at which the heart pumps blood as the body faces the scarcity of oxygen in the muscles which conducts the exercise. This increases rate of breathing so as to acquire more amount of oxygen. The oxygenated blood is pumped by the heart to all the parts of the body.

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Theo made a list of the properties of electromagnetic waves. Identify the mistake in the list. Electromagnetic Wave Properties 1

lapo4ka [179]

Answer:

Line 3 has a mistake.

Explanation:

Electromagnetic waves consist of oscillations of electric and magnetic fields that oscillate perpendicular to the each other. Therefore, Line 1 is correct.

Also, the fields in an electromagnetic waves oscillate perpendicular to the direction of propagation of the wave: therefore, they are transverse waves. So Line 2 is also correct.

Electromagnetic waves, contrary to mechanical waves, do not need a medium to propagate: so, they can also travel through a vacuum. Therefore, Line 3 is wrong.

Finally, all electromagnetic waves travel through a vacuum at the same speed, called speed of light:

$c=3\cdot 10^8 m/s$