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3 years ago

Cardiovascular fitness can be measured by what?

1 answer:

5 0

VO2 max is considered to be the most valid measure of cardio respiratory fitness. It measures the capacity of the heart, lungs, and blood to transport oxygen to the working muscles, and measures the utilization of oxygen by the muscles during exercise.

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The picture below shows a person swinging a yo-yo in a circle. Which vector shows the velocity of the yo-yo at this moment?

igor_vitrenko [27]

C, at this moment it is directly 90 degrees to the right and is only travelling downwards

6 0

2 years ago

ASAP pls answer I will mark brainiest if right.

Sergio039 [100]

1) g
2) b
3) a
4) e
5) c
6) d
7) f

5 0

3 years ago

TIME REMAINING

Ber [7]

Mass and velocity I think

3 0

2 years ago

Read 2 more answers

A 2.0 kg stone is tied to a 0.50 m string and swung around a circle at a constant angular velocity of 12 rad/s. The circle is pa

Paul [167]

Answer:

The magnitude of the torque about the origin is 108 N-m.

Explanation:

Given that,

Mass of the stone, m = 2 kg

Length of the string, l = 0.5 m

Angular velocity of the stone, $\omega=12\ rad/s$

The circle is parallel to the xy plane and is centered on the z axis, 0.75 m from the origin, r = 0.75 m

Firstly it is required to find the centripetal force acting on the stone. It is given by :

$F=mr\omega^2$

$F=2\times 0.5\times (12)^2$

F = 144 N

Now the magnitude of the torque about the origin is given by :

$\tau=r\times F$

$\tau=0.75\ m\times 144\ N$

$\tau=108\ N-m$

So, the magnitude of the torque about the origin is 108 N-m. Hence, this is the required solution.

5 0

3 years ago

The unit of area is a derived unit . why?

Leokris [45]

Answer:

A derived unit is called so because it is the product of two more basic units. The basic unit of area is the cubic meter (m³) for volume. By derived unit, it refers to any given quantity which cannot be measured directly with any device. For eg., We can't measure density of a substance with a rule, or scale, or bucket.

7 0

3 years ago