Igor Kurchatov is from Sim.
Duff Beer
Duff Beer is a fictional alcoholic drink shown in the animated television series "The Simpsons". Duff Beer is known to be Homer Simpson's favorite drink and has a mascot known as "Duffman".
Sassuntsi-Davit Tank Regiment
The Sassuntsi-Davit Tank Regiment (; previously the 119th Separate Rifle Tank (Mixed) Regiment) was a Soviet separate tank regiment during the Second World War. It had a lot of ethnic Armenians in it. Other ethnic groups that were in the regiment included Azeris, but they were largely relegated to logistics support and other non-combatant roles.
Sursk
Sursk (, 53°05'N 45°42'E) is town in Penza Oblast, Russia. Its population is near 7,500 (2005). The town was founded in 1860.
Sursk is located on the Sura River's left bank. It is 92 km from Penza.
Lipki
Lipki (, 53°57'N 37°42'E) is a town in Tula Oblast, Russia. Its population is about 9,700 (2005). Lipki is located 38 km south of Tula. The village of Lipki has been known since the 17th century.
Lage
Lage is a city in the Lippe district of North Rhine-Westphalia, Germany, approximatively 8 km northwest of Detmold. It has about 36,000 inhabitants.
The town is twinned with
Venture capital
Venture capital is a type of private equity capital..
Typically it is provided by outside investors to new businesses that promise to grow fast. Venture capital investments are usually high risk, but offer the potential for above-average returns.
A venture capitalist (VC) is a person who makes such investments. A venture capital fund is a pooled investment vehicle (often a limited partnership) that primarily invests the financial capital of third-party investors in enterprises that are too risky for the standard capital markets or bank loans.
Venture capital can also include managerial and technical expertise. Most venture capital comes from a group of rich investors, investment banks and other financial institutions that pool such investments or partnerships. This form of raising capital is popular among new companies, or ventures.
Moment of inertia
Moment of inertia (formula_1), also called "angular mass" (kg·m), is the inertia of a rotating body with respect to its rotation.
It is a rotating body's resistance to angular acceleration or deceleration, equal to the product of the mass and the square of its perpendicular distance from the axis of rotation.
Multiple choice
Multiple choice questions ask people to choose the answer from a list. Tests, elections, and surveys can use multiple choice questions. Frederick J. Kelly made the first multiple choice questions in 1914 at the University of Kansas. This testing method is popular in the United States.
1. formula_1
<br>A) 0<br>B) 22<br>C) 4<br>D) 2
<br><br>
2. Where is the Eiffel Tower?<br>A) London<br>B) Paris<br>C) Singapore<br>D) New York
<br><br>
Correct answers:<br>1 C<br> 2 B
Angular velocity
In physics, the angular velocity specifies the angular speed at which an object is rotating along with the direction in which it is rotating.
It is a vector quantity. The SI unit of angular velocity is radians per second. But it may be measured in other units as well (such as degrees per second, degrees per hour, etc.). When it is measured in cycles or rotations per unit time (e.g. revolutions per minute), it is often called the rotational velocity and its magnitude the rotational speed. Angular velocity is usually represented by the symbol omega (Ω or ω). The direction of the angular velocity vector is perpendicular to the plane of rotation, in a direction which is usually specified by the right hand rule.
Angular frequency
In physics, angular frequency.'" ω. "(also called the angular speed, radial frequency, and radian frequency) is a measure of rotation rate. A high rate of angular frequency means something is turning very fast. The angular frequency is the magnitude of the vector quantity angular velocity which is also known asangular frequency vector formula_1.
It is useful in many areas of maths and science as it allows understanding of many properties of physical objects in our world. In SI units, angular frequency is measured in radians per second, with dimensions t since radians are dimensionless.
Angular freqency is often given in radians per second (formula_2) as it is easier to work with. In this way, the angular frequency is given by,
where formula_4 is the time (period) of a single rotation(revolution) and formula_5 is the frequency.
If a wheel turns by an angle formula_6 in a time formula_7 then the angular frequency at any moment is given by,
If the rotation speed is constant, this becomes,
and so it is similar to a speed.
For objects which are going in circles, the angular frequency may also be given as (in radians),
where formula_11 is the speed and formula_12 is the distance from the middle of the circle.
The angular frequency is important in determining whether an object can stay above the ground against gravity, or whether a spinning top can stay standing. It also is important in creating the frequency of mains electricity supplies and reducing the heat due to friction in engines.
Objects are pulled towards the earth because of gravity. To oppose this, a satellite must go fast enough it misses the ground. For the forces to equal each other,
where formula_14 is the mass of the larger body and formula_15 is the Gravitational constant. To make a circle, the angular frequency must be equal to,
which leads to one of Johannes Kepler's Laws.
Generators in power stations rotate at some frequency. The speed at which these turn gives us the frequency that our electricity supplies are at. These can be slowed by large brakes or big heavy wheels which stop the generators from turning too quickly.
Pseudovector
In physics and mathematics, a pseudovector (or axial vector) is a quantity that transforms like a vector under a proper rotation, but gains an additional sign flip under an improper rotation (a transformation that can be expressed as an inversion followed by a proper rotation).
Physical examples of pseudovectors include the magnetic field, torque, vorticity, and the angular momentum.
Twister (1996 movie)
Twister is a 1996 American disaster movie directed by Jan de Bont, and based upon a screenplay by Michael Crichton and Anne-Marie Martin. It follows a group of storm chasers attempting to prevent all tornadoes from destroying everything in Oklahoma. The movie has a famous scene of a flying cattle. It is a scene that was the subject of many parodies. It was the first movie to be commercially released on DVD.
Spoke
A spoke is one of several rods radiating from the center of a wheel (the hub where the axle connects), connecting the hub with the round traction surface.
The term originally meant the portions of a log which one had split lengthwise into four or six sections. The radial members of a wagon wheel were made by carving a spoke (from a log) into their finished shape. Eventually, the term spoke was applied to the finished product of the wheelwright's work.
These pages are in German:
Examination
An examination (exam) is a test. Many things may be examined, but the word is most often used for an assessment of a person. It measures a test-taker's knowledge, skill, aptitude, physical fitness, or ability or standing in some other topic. It is a set of questions designed to measure those things. Examinations change and evolve. They have been used since ancient times.
In its widest sense, to examine is to look at something very carefully, perhaps to find the cause of a problem. Someone who is ill may need to go to a doctor for a medical examination. A mechanic may examine a machine to find why it is not working properly.