About Forces

  •  There is a force that attracts all things which are living and non-living in the Universe, which is Gravitational force.


  • The force that helps the body to float in a liquid is the Buyont force.



  • The force which helps us to stop anything which helps us to write on  board, walk on a road,  which is Frictional force.


Comments

Post a Comment

Popular posts from this blog

Glaciers and ice sheets hold about 69 percent of the world's freshwater.

Image
  Glaciers are a big item when we talk about the world's water supply. Almost 10 percent of the world's land mass is currently covered with glaciers, mostly in places like Greenland and Antarctica. You can think of a glacier as a frozen river, and like rivers, they "flow" downhill, erode the landscape, and move water along in the Earth's water cycle. During the maximum point of the last ice age, glaciers covered about 32 percent of the total land area. Starting around the early 14th century, and lasting to the mid-19th century, the world experienced a “Little Ice Age,” when temperatures were consistently cool enough for glaciers to advance in many areas of the world. In the United States, glaciers cover over 90,000 square kilometers (35,000 square miles). Most of those glaciers are located in Alaska, which holds 87,000 square kilometers (34,000 square miles) of glacial ice.  If all land ice melted, sea level would rise approximately 70 meters (230 feet) worldwide....
Read more

Oxygen in ocean

Image
  How much oxygen comes from the ocean? Scientists estimate that 50-80% of the oxygen production on Earth comes from the ocean. The majority of this production is from oceanic  plankton  — drifting plants, algae, and some bacteria that can photosynthesize. One particular species, Prochlorococcus, is the smallest photosynthetic organism on Earth. But  this little bacteria produces up to 20% of the oxygen in our entire biosphere . That’s a higher percentage than all of the tropical rainforests on land combined. It’s important to remember that although the ocean produces at least 50% of the oxygen on Earth, roughly the same amount is consumed by marine life. Like animals on land, marine animals use oxygen to breathe, and both plants and animals use oxygen for cellular respiration. Oxygen is also consumed when   dead plants and animals decay   in the ocean. Calculating the exact percentage of oxygen produced in the ocean is difficult because the amounts are con...
Read more

The Smallest guitar

Image
  The smallest guitar in the world is of the size of a red blood cell The  world's smallest guitar  is of the size of a  red blood cell. It was developed by scientists from  Cornell University.US The nano  guitar has six strings each of 50 nano meters wide.When  plucked by an atomic force microscope ,the strings would resonate.But it will at be inaudible frequencies. The first of its kind was made in Cornell University in 1997. The nano guitar was made from crystalline silicon.It is about  10 micrometers long .It can be viewed with the help of an  electron microscope .
Read more

How glaciers hold water

Image
  Glaciers and ice sheets hold about 69 percent of the world's freshwater. Glaciers are a big item when we talk about the world's water supply. Almost 10 percent of the world's land mass is currently covered with glaciers, mostly in places like Greenland and Antarctica. You can think of a glacier as a frozen river, and like rivers, they "flow" downhill, erode the landscape, and move water along in the Earth's water cycle.
Read more

The best place in the world to see rainbows is in Hawaii.

Image
  If you're an avid rainbow gazer and want to get your fill of the beautiful phenomenon, look no further than the state of Hawaii. A study published by the  American Meteorological Society  in 2021 noted that the area's "mountains produce sharp gradients in clouds and rainfall, which are key to abundant rainbow sightings." Air pollution, pollen, and a large amount of cresting waves also help to put Hawaii at the top of the list when it comes to rainbow quantity and quality.
Read more

Effcts Of "Smart phone"

Image
                    Effects of "Smart Phone"   In the smartphone era, people often expect you to be digitally connected 24/7 and to get back to them instantaneously, too — especially with email and social media read receipts.However, this is not realistic, and can cause problems when one party has the 24/7 availability mindset and the other does not. “Social media platforms are designed to encourage more digital interaction time". “Ultimately, though, we alone determine whether or not we’ll be ‘hooked’ into this mindset.” Increased smartphone use may also lead to depression. For instance, according to researchers who studied college students,  the more they used Facebook, the more their well-being decreased . “ I recommend putting smartphones away as much as possible, and doing so may be quite beneficial towards your mental health,”
Read more

Recent droughts in Europe were the worst in 2,100 years.

Image
  Europe has been experiencing serious dry spells and extreme heat since 2015, which has caused major droughts. Research done led by the University of Cambridge (and published on the  National Oceanic and Atmospheric Administration  website) looked at isotopes in the rings of old European Oak trees in Central Europe which formed over thousands of years to try to pin down the cause. They discovered that  the dry spells  are a "result of human-caused climate change and associated shifts in the jet stream," according to EurekAlert!
Read more

The fastest gust of wind ever recorded on Earth was 253 miles per hour.

Image
  Hang on to your hats because this isn't your average wind storm. In 1996, a tropical cyclone named Olivia hit off the coast of Barrow Island, Australia with such a force that it broke an incredible record. According to  The Weather Channel , "Olivia's eyewall produced five extreme three-second wind gusts, the peak of which was a 253 mph gust," which blew past  the previous wind record  of 231 mph set in Mount Washington, New Hampshire back in 1934.
Read more