B is the answer to your question
Answer:
Explanation:
Changing states of matter and energy
A block of ice is solid water. When heat (a form of energy) is added, the ice melts into liquid water. If heat is removed from water vapour, the gas cools down and it condenses back into liquid water. Continue to cool the water (by removing heat), and it becomes solid ice.
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STP (Standard Temperature and Pressure) has the following conditions:
Temperature = 273.15 K = 0°C
Pressure = 101325 Pa = 101.325 KPa = 1 atm
We also know that 1 mole = 6.022x10^23 molecules
Using the ideal gas equation: PV=nRT
n/V = P/RT
molecules/V = P*6.022x10^23/RT
molecules/V = 101325 Pa (6.022x10^23 molecules/mole)/ (8.314 Pa-m3/mol-K)(273.15K)
molecules/V = 7.339x10^27 molecules/m^3 - Final answer
<span>D. where the ocean meets a reef
</span>What is the intertidal zone?
<em><u>
where the ocean meets a reef
</u></em>
NOT:
A. where the ocean meets fresh water
B. where the ocean meets the land
<span>C. where the ocean meets a tide</span>
To solve this exercise it is necessary to take into account the concepts related to Pressure depending on the Force and the Area.
The pressure is defined as

Where,


Our values are given as,


Where
is the mass of the person and
is mass of cycle. Therefore the total mass at the system is 105Kg.
For Newton's second law we have:
where a is the acceleration, in this case the same Gravitational acceleration.
We need to make two considerations, the first is to calculate the total weight and second to calculate the weight on each wheel (2), that is


Force in each wheel,


In this way we can now calculate the length based on the pressure, that is





Therefore each tire has 3.21cm