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Chapter 1: Problem 57

Give few examples from day to day life, where physics is employed.

Short Answer

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Question: Provide a few examples of physics being employed in day-to-day life. Answer: Some examples of physics in day-to-day life include riding a bicycle, cooking food, using a smartphone, playing sports, and weather phenomena. These scenarios involve principles of force, motion, energy, heat transfer, convection, electromagnetism, gravity, and fluid dynamics, among others.

Step by step solution

01

Example 1: Riding a Bicycle

One example of physics in day-to-day life is when someone rides a bicycle. Physics is employed in this scenario through the principles of force, motion, and energy. When a person pushes against the pedals, they are applying a force which causes the bicycle to accelerate. The concept of motion is also present as the bicycle moves forward as a result of this force. Additionally, kinetic energy is involved, as the moving bicycle has energy due to its motion.
02

Example 2: Cooking Food

Cooking involves various principles of physics, such as heat transfer, convection, and even the conversion of energy from one form to another. For instance, when heating up a pan on a stove, heat is transferred from the stove to the pan through conduction. The heat transfer cooks the food, and the process of convection ensures that heat is evenly distributed within the pan. Moreover, in this scenario, chemical energy stored in the fuel (gas or electric) is converted into thermal energy to cook the food.
03

Example 3: Using a Smartphone

Our daily usage of smartphones is an excellent example of physics being employed in everyday life. Smartphones function by using principles of electromagnetism, with electronic circuits and components working together to allow the phone to receive signals, process data, and send messages. Additionally, touchscreens use principles of capacitance and electric fields to detect finger touch, while the phone's accelerometer interprets changes in the orientation of the phone based on the principles of mechanics and motion.
04

Example 4: Playing Sports

Physics is involved in various sports we play, such as basketball, soccer, or baseball. For instance, when a basketball player jumps to make a shot, principles of gravity, force, and projectile motion are at play. The force exerted by the player's muscles propels them into the air, and gravity brings them back down to the ground. The trajectory of the basketball through the air also follows a parabolic path, which can be described through the equations of motion in projectile motion.
05

Example 5: Weather Phenomena

Weather phenomena, such as rain, wind, and storms, demonstrate physics principles in action in everyday life. The water cycle, which involves evaporation and condensation processes, relies on heat transfer principles to drive changes in state for water molecules. Wind results from differences in air pressure and temperature, invoking concepts related to fluid dynamics and thermodynamics. Additionally, storms, particularly thunderstorms, exhibit principles of electricity and magnetism through the occurrence of lightning.

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Most popular questions from this chapter

Bring out the differences between the mass and the weight of a body.

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