Which topic is narrow enough to serve as the subject of a documented essay?
Which topic is narrow enough to serve as the subject of a documented essay?
Answer. The correct answer is option A. Succeeding on college admission tests is the topic that is narrow enough to serve as the subject of a problem-and-solution essay. Here the problem in question is college admission tests which needs to be passed.
What was the invention of Einstein short answer?
The most important invention of Einstein is atomic bomb, along with Leo Szilard. They together invented Einstein refrigerator for which they took patent in 1930 and it is later developed by the scientists of Oxford University.
What does E mc2 mean?
E = mc2
How did Einstein’s theory of relativity changed the world?
His work transformed our way of living at the cosmos. When Einstein put forward his general theory of relativity, that gravity itself is the bending of space and time by mass and energy, it was a seminal moment in the history of science. Today, the importance of his work is even better recognized than a century ago.
What is Einstein’s theory of relativity for dummies?
In 1905, Albert Einstein published the theory of special relativity, which explains how to interpret motion between different inertial frames of reference — that is, places that are moving at constant speeds relative to each other.
How is e mc2 used today?
Many everyday devices, from smoke detectors to exit signs, also host an ongoing, invisible fireworks of E = mc2 transformations. Radiocarbon dating, which archeologists use to date ancient material, is yet another application of the formula.
How is e mc2 used in everyday life?
When you drive your car, E = mc2 is at work. As the engine burns gasoline to produce energy in the form of motion, it does so by converting some of the gasoline’s mass into energy, in accord with Einstein’s formula. When you use your MP3 player, E = mc2 is at work. As you read this text, E = mc2 is at work.
Why is C Squared?
Energy is measured in units of mass times velocity squared. Hence, the factor between mass and energy has to be (m^2 / s^2) which is some velocity squared. And the only fundamental constant we have that is a velocity is the speed of light c. That’s why it has to be c^2.
Does E mc2 apply to humans?
Many people think mass can be converted into energy and vice versa. But E=mc^2 is the equation for mass-energy equivalence. Their mass is proportional to the amount of energy they contain. So the human body cannot be converted into energy, because it already is energy!
What devices use Einstein’s theories in our daily life?
Four contributions Einstein has made to our daily lives
- GPS Navigators. All GPS navigators — including mobile applications like Google Maps — function by measuring the distance from one point on Earth to one of many satellites orbiting our planet.
- Laser devices.
- Photoelectric cells.
- The Physics of financial markets.
What is Albert Einstein IQ?
According to estimates by means of biographical data, Albert Einstein’s IQ has been estimated to sit anywhere between 160 and 180. That would firmly place the physicist in the genius territory.
What are 6 things Albert Einstein invented?
As we look back on this innovative thinker, here are some of Albert Einstein’s most significant achievements.
- Quantum Theory of Light.
- Special Theory of Relativity.
- Avogadro’s Number.
- The Bose-Einstein Condensate.
- General Theory of Relativity.
- The Photoelectric Effect.
- Wave-Particle Duality.
Who invented gravity?
Isaac Newton’s
How gravity is created?
Earth’s gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body. You exert the same gravitational force on Earth that it does on you. But because Earth is so much more massive than you, your force doesn’t really have an effect on our planet.
Is gravity just a theory?
Gravity is most accurately described by the general theory of relativity (proposed by Albert Einstein in 1915), which describes gravity not as a force, but as a consequence of masses moving along geodesic lines in a curved spacetime caused by the uneven distribution of mass.
Will anti gravity ever be possible?
In the 20th century, Newton’s model was replaced by general relativity where gravity is not a force but the result of the geometry of spacetime. Under general relativity, anti-gravity is impossible except under contrived circumstances.
Does gravity exist in a vacuum?
In a vacuum, gravity causes all objects to fall at the same rate. The mass of the object does not matter. If a person drops a hammer and a feather, air will make the feather fall more slowly. The spacecraft, its crew and any objects aboard are all falling toward but around Earth.
Does NASA have anti gravity chamber?
Contrary to popular belief, NASA does not have “anti-gravity chambers” where people can float around like astronauts on the space station. It is NASA’s premier facility for conducting ground-based microgravity research.
What is gravity made of?
They proposed that gravity is actually made of quantum particles, which they called “gravitons.” Anywhere there is gravity, there would be gravitons: on earth, in solar systems, and most importantly in the miniscule infant universe where quantum fluctuations of gravitons sprung up, bending pockets of this tiny space- …
Why is gravity so weird?
2. Why is gravity so weird? No force is more familiar than gravity — it’s what keeps our feet on the ground, after all. And Einstein’s theory of general relativity gives a mathematical formulation for gravity, describing it as a “warping” of space.
How did Einstein explain gravity?
Einstein argued that gravity isn’t a force at all. He described it as a curvature of time and space caused by mass and energy. Their math, laid down in 10 equations, explained how gravity could move around objects via a warped reality, accelerating without ever feeling any mysterious Newtonian forces.
Does weight affect gravity?
Heavier things have a greater gravitational force AND heavier things have a lower acceleration. It turns out that these two effects exactly cancel to make falling objects have the same acceleration regardless of mass.
Does size affect speed?
Our results show that the size of an object affects the perception of its speed. In particular, smaller objects appeared to move faster in translational motion.
Does size affect gravity?
Gravitational force is an attraction between masses. The greater the size of the masses, the greater the size of the gravitational force (also called the gravity force). The gravitational force weakens rapidly with increasing distance between masses.
Does Weight Affect Height?
At approximately age 9 years, those who became obese or overweight stood approximately 3.5 cm taller than those who had normal weight as an adult. Differences in height were slightly greater by age 11 years, whereby those who became obese were, on average, 4.5 cm taller than the normal weight group.
Can you get taller by stretching?
No Exercises or Stretching Techniques Can Make You Taller.
Can you lose height?
Height loss is related to aging changes in the bones, muscles, and joints. People typically lose almost one-half inch (about 1 centimeter) every 10 years after age 40. Height loss is even more rapid after age 70. You may lose a total of 1 to 3 inches (2.5 to 7.5 centimeters) in height as you age.
Does gym affect height?
If you’re a parent of a child under age 18, you might be wondering if the strength training workouts children are doing at the gym or as part of a sports team are stunting your child’s growth. While this concern about stunted growth seems legitimate, the good news is, your child does not have to quit lifting weights.
At what age height growth stops?
For Most, Height Won’t Increase After Age 18 As you can see, the growth lines fall to zero between ages 18 and 20 ( 7 , 8 ). The reason why your height stops increasing is your bones, specifically your growth plates.
Is it bad to lift weights at 14?
“Growing children should not lift weights with the goal of lifting as much as they can. It’s safer for them to start with lighter weights and do many repetitions of an exercise.” Studies have suggested that weight training might harm a child’s growth, lead to injuries or not increase muscle strength.
What is Albert Einstein known for?
relativity
What are Albert Einstein’s inventions?
Gas absorption heat pump
What kind of person was Albert Einstein?
Albert Einstein was a German mathematician and physicist who developed the special and general theories of relativity. In 1921, he won the Nobel Prize for physics for his explanation of the photoelectric effect.
What is the most dangerous laser color?
blue
Can a laser pointer hit the moon?
The typical red laser pointer is about 5 milliwatts, and a good one has a tight enough beam to actually hit the Moon—though it’d be spread out over a large fraction of the surface when it got there. The atmosphere would distort the beam a bit, and absorb some of it, but most of the light would make it.
Do lasers go on forever?
A: The light from a laser in space would continue on forever unless it hit something. However, if you were far enough away, you wouldn’t be able to detect the light. If you go far enough away, the light will eventually spread out far enough to be undetectable.
Why are green lasers banned?
The primary culprit was overpowered units. The Code of Federal Regulations in the United States limits commercial class IIIa lasers to 5 milliwatts (mW). And yes, lasers above 5 mW are commercially available in the United States, but it is illegal to market them as Class IIIa devices.
Is a Class 3 laser legal?
Class 3 has two levels – Class 3R and Class 3B. 3R can cause damage to an eye although it is low risk and includes some more powerful laser pointers and DIY home products. They include lasers used for physiotherapy treatments and in research. They shouldn’t be used by the public.
What color laser is the strongest?
green lasers
Why are blue lasers illegal?
Blue and violet lasers can be particularly dangerous because human eyes are least sensitive to these color frequencies. When a laser beam hits the windshield of a plane, it can diffuse into a glow that impairs the pilot’s vision. A laser beam that strikes a pilot’s eye can also cause flash-blindness or blurry vision.
Why are blue lasers so expensive?
Both blue and green laser pointers use a pump diode that gives out infrared 808nm light that is used to pump the same type of crystals. The larger pump diode makes blue laser pointers more expensive. The frequency doubling crystals in blue laser pointers are rarer and more expensive than those in green laser pointers.
What is the most powerful laser you can legally own?
Spyder III Pro Arctic
Are blue lasers illegal?
In the U.S., it is legal under federal law to own a laser of any power. But often people talk about “illegal laser pointers”. This is somewhat confusing shorthand meaning that the manufacturer or seller illegally called a laser above 5 milliwatts a “pointer”, or illegally promoted it for pointing purposes.
Are beams on guns illegal?
The FDA restricts the output power of visible lasers that can be sold to “civilians” to no more than 5 milliwatts (mW) and classifies lasers we are allowed to buy for firearms as Class IIIA.
Can a laser kill you?
Lasers may not be able to kill, but they can cause blindness by burning the eye’s light-sensitive retina.
Why are there no laser guns?
The battery issue is just one of the reasons why we don’t have laser guns yet. Directly exposing an eye to a laser for even a short space of time can cause permanent damage to vision, or even blindness. So if hand-held laser weapons are ever invented, laws may need to be changed in order to use them.
Does China have laser weapons?
China’s People’s Liberation Army Navy (PLA Navy) is testing a tactical laser system that bears remarkable similarity to the U.S. Navy’s Laser Weapon System (LaWS), an anti-surface / anti-air defensive weapon which has been in development since 2014.
What stops a laser beam?
The best way to stop a laser is to use a mirror to send it away or put some object in the way. The object will absorb the light from the laser much like your clothes absorb some of the light from around you.