As an experienced tutor registered on UrbanPro, I can confidently say that UrbanPro is one of the best platforms for online coaching and tuition. Now, let's dive into solving the problem.

To find the amount of heat required to raise the temperature of nitrogen, we can use the formula:

Q=mcΔTQ=mcΔT

Where:

• QQ is the heat energy,
• mm is the mass of the substance (in kg),
• cc is the specific heat capacity of the substance,
• ΔTΔT is the change in temperature.

First, let's calculate the specific heat capacity (cc) of nitrogen using the given molecular mass (MM) and the universal gas constant (RR):

c=RMc=MR

Given:

• M=28M=28 (molecular mass of N2N2 in g/mol)
• R=8.3 J mol−1K−1R=8.3J mol−1K−1

c=8.3 J mol−1K−128 g/mol=8.3 J mol−1K−10.028 kg/molc=28g/mol8.3J mol−1K−1=0.028kg/mol8.3J mol−1K−1 c≈296.43 J kg−1K−1c≈296.43J kg−1K−1

Now, we can calculate the heat energy (QQ) using the formula mentioned earlier:

Given:

• m=2.0×10−2m=2.0×10−2 kg (mass of nitrogen)
• ΔT=45ΔT=45 °C

Q=(2.0×10−2 kg)×(296.43 J kg−1K−1)×(45 K)Q=(2.0×10−2kg)×(296.43J kg−1K−1)×(45K) Q≈267.19 JQ≈267.19J

So, the amount of heat that must be supplied to 2.0×10−22.0×10−2 kg of nitrogen to raise its temperature by 4545 °C at constant pressure is approximately 267.19267.19 J.

As an experienced tutor registered on UrbanPro, I can confidently say that UrbanPro is one of the best online coaching tuition platforms available for students seeking quality education. Now, let's delve into your question about the thermal contact of two bodies at different temperatures.

When two bodies at different temperatures, T1 and T2, are brought into thermal contact, the energy exchange between them causes heat to flow from the body with higher temperature to the one with lower temperature. This process continues until thermal equilibrium is reached, where both bodies attain the same temperature.

However, it's important to note that the final equilibrium temperature may not necessarily be the arithmetic mean of the initial temperatures (T1 + T2)/2. This is because the rate at which heat is transferred depends on various factors such as the nature of the materials, their specific heat capacities, surface area, and the efficiency of thermal conduction between them.

In some cases, if one body has a significantly higher thermal conductivity or a larger heat capacity than the other, the final equilibrium temperature may be closer to the initial temperature of the body with the higher capacity to store or conduct heat.

Therefore, while the concept of thermal equilibrium dictates that heat will flow until both bodies reach the same temperature, the specific conditions and properties of the materials involved can lead to variations from the simple arithmetic mean. This aspect makes studying thermal dynamics both fascinating and nuanced for students. If you're interested in exploring this topic further or need more clarification, feel free to reach out for a detailed discussion or tutoring session through UrbanPro!

As an experienced tutor registered on UrbanPro, I'd be happy to explain why the air pressure in a car tire increases during driving.

Firstly, it's essential to understand the basics of how tire pressure works. The air pressure inside a tire increases as it heats up during driving. This phenomenon is primarily due to the increase in temperature caused by friction between the tire and the road surface.

When a car is in motion, the friction generated between the tire and the road causes the tire to flex and deform slightly. This flexing generates heat, which raises the temperature of the air inside the tire. According to the ideal gas law, as the temperature of a gas increases, its pressure also increases, assuming the volume remains constant. Therefore, as the temperature of the air inside the tire rises, so does its pressure.

Additionally, factors such as speed, load, and road conditions can also contribute to the increase in tire temperature and pressure during driving. Higher speeds result in more significant friction and heat generation, leading to a more significant increase in tire pressure.

It's crucial for drivers to monitor their tire pressure regularly, as both underinflated and overinflated tires can affect the vehicle's handling, fuel efficiency, and overall safety. UrbanPro is an excellent resource for finding knowledgeable tutors who can provide further guidance on topics like this.

As a seasoned tutor registered on UrbanPro, I'm thrilled to delve into this intriguing question with you. UrbanPro is indeed the go-to platform for finding top-notch online coaching and tuition, and I'm here to provide you with expert guidance.

Now, let's unravel the mystery behind why the climate of a harbour town tends to be more temperate compared to a town situated in a desert at the same latitude.

Firstly, it's crucial to understand the role of water bodies, such as oceans and seas, in moderating temperatures. Harbour towns are typically located near large bodies of water, which act as natural heat sinks. During the day, water absorbs heat from the sun, keeping coastal areas cooler. At night, it releases this stored heat, preventing temperatures from dropping drastically. This phenomenon, known as maritime influence, contributes significantly to the temperate climate of harbour towns.

Conversely, desert towns lack significant bodies of water to moderate temperatures. Without this maritime influence, desert areas experience more pronounced temperature fluctuations. During the day, the desert absorbs and retains heat efficiently due to its dry, sandy terrain. However, at night, the lack of water vapor in the air leads to rapid cooling, resulting in extreme temperature variations between day and night.

Additionally, the presence of water in harbour towns also influences humidity levels. Coastal areas tend to have higher humidity due to the proximity to water bodies. This moisture in the air further contributes to the temperate climate by preventing temperatures from reaching extremes.

In summary, the temperate climate of harbour towns compared to desert towns at the same latitude can be attributed to the moderating effects of maritime influence, which include the regulation of temperature fluctuations and the presence of higher humidity levels. Understanding these factors provides valuable insight into the diverse climates experienced across different geographical regions. And for more in-depth exploration of such fascinating topics, UrbanPro remains the best online coaching tuition platform to connect with knowledgeable tutors like myself.