Figure It Out (# 4)!!!

Jack was rowing his boat on a river .When he was under a bridge; he dropped a ball into the river. Jack continued to row in the same direction for 10 minutes after he dropped the ball. He then turned around and rowed back. When he reached the ball, the ball had floated 600m from the bridge. How fast was the river flowing?

How many minutes does the Earth rotate in one minute?

What is the highest speed achieved by throwing (with and without a racket)? What was the projectile used?

Figure It Out (# 3)!!!

1.) Imagine a rubber band that is attached to a wall on one end and is attached to a horse at the other end, as shown in. On the rubber band, near the wall, there is a snail. Both the snail and the horse start moving, with typical speeds – with the rubber being infinitely stretchable. Can the snail reach the horse?

2.) How many times in twelve hours can the two hands of a clock be exchanged with the result that the new situation shows a valid time? What happens for clocks that also have a third hand for seconds?

Figure It Out (# 2)!!!

1.) A hunter leaves his home, walks 10km to the South and 10 km to the West, shoots a bear, walks 10km to the North, and is back home. What colour is the bear? You probably know the answer straight away. Now comes the harder question, useful for winning money in bets. The house could be on several additional spots on the Earth; where are these less obvious spots from which a man can have exactly the same trip (forget the bear now) that was just described and be at home again?

2.) How often in 24 hours do the hour and minute hands of a clock lie on top of each other? For clocks that also have a second hand, how often do all three hands lie on top of each other?

3.) How do you find the centre of a beer mat using paper and pencil?

Figure It Out (# 1)!!!

1.) A man wants to know how many stairs he would have to climb if the escalator in front of him, which is running upwards, were standing still. He walks up the escalator and counts 60 stairs; walking down the same escalator with the same speed he counts 90 stairs. What is the answer?

2.) How can you make a hole in a piece of paper that allows you to step through it?

3.) Imagine a black spot on a white surface. What is the colour of the line separating the spot from the background? This question is often called Peirce’s puzzle.

What Is An Atom?

The atom is the most basic form of matter. Atoms consist of three main particles, protons, neutrons, and electrons. There are 89 basic atom forms called elements. All elements have a state at all times; they are ether a solid liquid or gas. On the periodic-table the state of an element is determined at room temperature. Surprisingly there are only two elements that are liquids at room temperature (Bromine, and Mercury). Most elements are ether a solid or a gas.

How Do Nuclear Reactions Work?

Nuclear reactions are a chain-reaction that happens as a result of splitting certain radioactive atoms. One example of an atom that can sustain a chain-reaction is ‘Helium-3’ (an isotopes of helium). To split the atoms scientists shoot an electron at the isotopes casing a chain reaction. The reaction happens because when the atom is hit by the electron it splits the atom causing the electrons, neutrons, and protons to separate and shoot at other atoms causing them to do the same and so on and so on.

what is time?

What is time?

All methods for the definition of time are based on comparisons of motions. In order to make the concept as precise and, useful as possible, a standard reference motion is chosen. Also with it a standard sequence and, a standard duration is defined. The device that performs this task is called a clock.

Note;

Note that all definitions of time used in the various branches of physics are equivalent to this one; there is no more fundamental definition is possible.

{Volume2} (Chapter:1) MAXIMUM SPEED, OBSERVERS AT

the sub topics are; (Can one play tennis using a laser pulse as the ball and mirrors as rackets?), (Albert Einstein), (An invariant limit speed and its consequences), (Special relativity with a few lines), (Acceleration of light and the Doppler effect), (The difference between light and sound), (Can one shoot faster than one’s shadow?), (The composition of velocities), (Observers and the principle of special relativity), (What is space-time?), (Can we travel to the past? – Time and casuality), (Curiosities about special relativity), (Faster than light: how far can we travel?), (Synchronization and time travel – can a mother stay younger than her own daughter?), (Length contraction), (Relativistic films – abbreviation and Doppler effect),  (Which is the best seat in a bus?), (How fast can one walk?), (Is the speed of shadow greater than the speed of light?), (Parallel to parallel is not parallel – Thomas rotation), and (A never-ending story – temperature and relativity).

 

In this chapter we will start on the basics of all this and get deeper, in later chapters.

{Volume1} (Chapter:3) HOW TO DESCRIBE MOTION -KINEMATICS

 Galilean Time and Space is defined by saying, motion is change of position with time. This definition is extracted from the environment by higher animals. This description is illustrated by rapidly flipping the lower corners of a book with a similar picture with a slight difference.

But calling ‘motion’ the change of position with time is neither an explanation nor a definition, since both the concepts of time and position are deduced from motion itself.

learn more in my media section.

{Volume1} (Chapter:2) FROM MOTION MEASUREMENT TO CONTINUITY

 

  

“Ch,2” (this chapter is about velocity, observation, measurement, time, and if clock’s exist.)

The simplest description of motion is the one we all, like cats or monkeys, use unconsciously in everyday life: only one thing can be at a given spot at a given time. This general description can be separated into three assumptions: matter is impenetrable and moves, time is made of instants, and space is made of points. Without these three assumptions it is not possible to define velocity in everyday life. This description of nature is called Galilean physics, or sometimes Newtonian physics.

 

(Galileo Galilei (1564–1642), Tuscan professor of mathematics, was a founder of modern physics). (The English alchemist, occultist, theologian, physicist and politician Isaac Newton (1643–1727) was one of the first to pursue with vigour the idea that different types of motion have the same properties, and he made important steps in constructing the concepts necessary to demonstrate this idea.)