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AVprozaik [17]
2 years ago
7

What is someones target heart rate at 70% at age 17​

Physics
1 answer:
baherus [9]2 years ago
6 0

Answer: normal

Explanation:

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ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements.
vekshin1

Answer:

The answer is 500

Explanation:

6 0
2 years ago
The same wave travels for 2 seconds, what is its frequency?*
sveticcg [70]

Answer:

In waves distance is measured by wave length  and time is measured by frequency or period.

velocity ratio=wave length multiply by frequency.

HENCE, if the same wave travels for 2 econds its frequency will be 2Hz.

Explanation:

8 0
2 years ago
The calculation of kinetic energy uses the formula, KE = 1 2 mv2. Identify the unit that is required for mass and velocity, resp
shusha [124]

So the answer  is B.  because the mass have  Kg as a international unit and velocity is m/s, they are  international units in physics.

8 0
3 years ago
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Branches of sicence​
Sonja [21]

Answer:

physical science

earth science and life science

5 0
2 years ago
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The solid rod shown has a radius of 0.75 in. if it is subjected to the force the 500lb determine the max normal stress developed
Kipish [7]
The normal stress follows the formula written below:

σ = F/A

There are two types of stress, axial and tangential. Since we are only given with the dimension of the radius (and not the length), the possible stress is axial. So, the area is,

A = πr² = π(0.75 in)² = 1.767 in²

So,
σ = F/A = 500 lb/1.767 in² = <em>282.94 psi</em>
7 0
3 years ago
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