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yulyashka [42]
3 years ago
12

When is a body said to be motion ( movement)?

Physics
1 answer:
vodomira [7]3 years ago
7 0
A body is said to be in motion when it's position changes continuously with respect to a stationary object taken as reference point.
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Why does ice change into water on heating ? <br>​
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Answer:

Explanation:

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Calculate the number of molecules/m3 in an ideal gas at stp.
vivado [14]
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
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molecules/V = 7.339x10^27 molecules/m^3 - Final answer
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What is the intertidal zone?
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A 100 kg person sits on a 5 kg bicycle. The total weight is borne equally by the two wheels of the bicycle. The tires are 2.0 cm
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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

P =\frac{F}{A}

Where,

F_w = Force

A = Area

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m_1 = 100Kg

m_2 = 5Kg

Where m_1 is the mass of the person and m_2 is mass of cycle. Therefore the total mass at the system is 105Kg.

For Newton's second law we have:

F = ma \rightarrow 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

F_T = 105*9.8

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Force in each wheel,

F_{wheel} = \frac{1030.05}{2}

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

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Therefore each tire has 3.21cm

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