physics examples

Example for frame of reference Look at the figures. In fig.1, the car is to the right of the tree. In fig.2, after 2 seconds, the car is to the left of the tree. As the tree does not move, the car must have moved from one place to another. Therefore, here the tree is considered as th..

The vector , as shown in the figure, is expressed in terms of its components and unit vectors as, where a x , a y are the magnitudes of a along X, Y directions respectivel..

Pins and nails have pointed ends so that, when a pin is pressed, high pressure is applied on the surface with lesser force, as area is small. Tractors with wide wheels can move over soft ground because their weight (force of gravity) is spread over a large area and so that the tractors do not ..

A coin placed on top of a card remains in place when the card is slightly and quickly jerked horizontall..

A ball rolled on a horizontal floor continues to move in a straight lin..

A TV tower has a height of 100m. How much population is covered by the TV broadcast if the average population density around the tower is 1000 km - 2 ? Given radius of earth = 6.37 x 10 6 ..

Humans have always been curious about the world around them. The world has an astonishing variety of materials and bewildering diversity of life and behaviour. The inquiring and imaginative human mind has responded to the wonder and awe of nature in different ways. This human endeavour led, in cour..

While reading the length of a simple pendulum or the length of a resistance wire or while finding the weight of a body using spring balance, mass by a beam balance etc., we are likely to make mistakes. The percentage error can be calculated by using the formula. Percentage error For example..

Measurement and Experimentation - The goal of physics is to provide an understanding of nature. The science of physics was developed to explain our physical environmen..

Relative Humidity - Usually the amount of water vapor is less than the absolute value at a given temperature. Relative humidity is defined as the ratio of the actual amount of water vapor in the atmosphere to the absolute humidity at that temperature. For example, suppose air contains 10 ..