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lianna [129]
3 years ago
13

What is used to calculate or determine intensity during exercise

Physics
1 answer:
tino4ka555 [31]3 years ago
6 0
Typically your target heart rate is used for that. you can track and guide your exercise intensity by calculating your target heart rate range
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Circumference of a circle given the radius or diameter? explain why or why not
djyliett [7]

Circumference of a circle can be calculated if the radius or the diameter is given.

<u>Explanation</u>:

  • Circumference or the perimeter of a circle can be calculated if the radius or the diameter of the circle is given.
  • This is calculated by the formula -  2 * pi * r (if radius is given) and  pi * d (if diameter is given) where pi = 3.14, r = radius and d = diameter
  • This calculation is based on the fact that the circumference is three and a little more times that of the radius. Since the diameter is double that of the radius, when the diameter is given formula becomes pi*d.
3 0
3 years ago
When riding a 10-speed bicycle up a hill, a cyclist shifts the chain to a larger-diameter gear attached to the back wheel. Why i
dimaraw [331]

To solve this problem we will use the concepts of the moment of rotational inertia, angular acceleration and the expression of angular velocity.

The rotational inertia is expressed as follows:

I = \sum mr^2

Here,

m = Mass of the object

r = Distance from the rotational axis

The rotational acceleration in terms of translational acceleration is

\alpha = \frac{a}{R}

Here,

a = Acceleration

R = Radius of the circular path of the object

The expression for the rotational speed of the object is

\omega = \frac{\Delta \theta}{\Delta t}

Here,

\Delta \theta is the angular displacement of the object

The explanation by which when climbing a mountain uphill is changed to a larger pinion, is because it produces a greater torque but it is necessary to make more pedaling to be able to travel the same distance. Basically every turn results in less rotations of the rear wheel. Said energy that was previously used to move the rotation of the wheel is now distributed in more turns of the pedal. Therefore option a and c are correct.

This would indicate that the correct option is D.

8 0
4 years ago
Please choose the answer that describes the scientific notation for 3,134,000,000.
const2013 [10]
Well, the answer is obviously D, because it's the only one that starts with 3.134.

Moving the decimal place 9 times to the right will give us:

3,134,000,000

\Huge\checkmark
5 0
4 years ago
Read 2 more answers
5. Work is being done when a force
Artyom0805 [142]

Answer:

work is done when a force is applied. the force must not be zero and should make the object move through a certain distance.

4 0
2 years ago
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What are the four layers of oceanic crust from top to bottom?
Thepotemich [5.8K]
Oceanic, Crust, Geolific, techtonic
7 0
3 years ago
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