Question

a farmer moves along the boundary of a square field of side 10 m in 40 seconds what will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position​

Answer 1

Answer:

Farmer takes 40 s to move along the boundary. Thus, after 3.5 round farmer will at point C of the field. Thus, after 2 min 20 seconds the displacement of farmer will be equal to 14.14 m north east from initial position.

Speed = Distance / Time: Velocity = Displacement / Time

Speed: Velocity

Answer 2

Step-by-step explanation:

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We know that the sun is very important to us but the main question is why. We all understand that the sun supplies Earth with never ending energy that we use in multiple ways. The energy comes in as heat and light and we transform the energy in different ways to create electricity. But how is the energy created and how it gets to Earth? The formation of sun’s energy lies within its core and radiates outward and travels out to Earth and the rest of the solar system. Our sun is the central part of our solar system; if the sun didn’t exist several things wouldn’t occur: the process of photosynthesis would not take place, oxygen cannot be created, therefore, life cannot be present. The sun and its sunlight give us access to many resources. Sunlight helps the plants produce oxygen and overtime create fossil fuels. The importance of the sun is both positive and negative, the more we study and understand the sun we learn to advance our society. The suns positive effects help us find and progress ways to gain renewable resources, such as creating wind power, dams and solar energy. The negative effects of the sun include climate changes and damaging of the ozone, and harmful effects on humans that result in sunburn, eye damage, and damaging of the skin: skin cancer and premature aging. The sun produces two different Ultraviolet Radiations (UV rays), UVA and UVB. The sun effects earth in many ways to carry on life and that’s why it is very important. It gives us the privilege to energy: heat and light, oxygen, water, electricity, and many more. It’s truly amazing how this star of gas can create many things to save our life’s and it is important that we understand the reasons why, and not always take it for granted. Who knows scientist say that after another 5 billion years there may not be a sun anymore.

hope this helps you ☺️