Mechanics Study Guide Essay examples

3. The sun is a ball of glowing gas, so it’s very, very hot. About three fourths of the sun's mass is highly, flammable gas, one fourth is helium, and very small amounts are other chemical elements.

Step three: The experimenters repeated the process to measure the diameter of the 100 g mass.

It is no secret that the earth’s sun is “special” to say the least. Some would say it was designed to be unique to help sustain life on planet earth. However, other nearby stars were not designed to sustain life. One example would be the star Proxima Centauri. This star recently had a short increase in radiation, known as a flare. This flare caused the star to become a thousand times brighter for ten seconds. Earth’s sun also has flares, but they are much smaller. When Proxima Centauri is at its brightest point it is still ten times brighter than our suns largest flare. This is just one example of how special our sun really is.

2. The moons X and Y orbit 2 different planets. They have the same orbital velocity, but the distance of X from its planet is 2 times the distance of planet Y from its planet. Which planet has more Mass? PLANET X

@ 20m: potential energy is 2kg * 20m * 9.81m/s2 = 392.4joules, KE = 0

The hypothesis is that the hooked mass used on the pulley to keep the cart stationary on the ramp is equal to the mass of the cart. The hypothesis is invalid, it is not supported by the data. Mass is a the amount of matter in an object so it always remain the same. As shown on the table, the hooked masses vary depending on the degree of the incline so it cannot be the mass of the cart. In addition, the correct calculation of the mass of the cart proves that the hypothesis is wrong. For the 15 degree incline, the mass of the cart is 19.3kg while the hooked mass is .050kg. This clearly shows that the hooked mass used on the pulley to to keep the cart stationary is not equal to the mass of the cart. For the 20 degree incline, the mass of the

With his 3 laws of motion, Newton changed our understanding of the universe. The first law of motion states that an object at rest or moving will not be in motion or stop unless acted upon by an unbalanced force. This basically means that an object will stay in whichever position or continue to be in motion until an unbalanced force moves it or stops it. This law is also known as the “law of inertia” In the second law of motion, Newton states that acceleration happens when a force acts on mass. The greater the mass is on the object accelerated, the greater amount of force needed to accelerate the object. The second law shows an exact relationship between force, mass, and acceleration. This law is also expressed as a mathematical equation:

At the end of the sun's life it will tar into a redgin star in a billion of years. The sun will throw off its over layers and become a plantery newborn. All that will be left of the sun is a cooling white dwan star. Nasa is learning black holes using spacecraft like the x-ray obvertory. They are also using ferm; grammarly ray space telescope (Dunbar). Black hole is a different kind of supernova. Black holes are hotter than stars. The center of a black hole is dense but not as hug itself. A black hole can be 2,000,000 times smaller than are sun. We can not observe black holes directly, but can be detected. Speed of light galaxies are have 20 billion solar masses. Univer stars gravitational field materact. Stars, light years, supernovas, and light bursts in the univers. The mass of the earth is 2,000,000 times smaller than the sun and can fit in your palm. Supermassive black holes culrk in the centers of the galaxies. The stares can become mostly iron, most stars elements in the universe. There may be camofluge black holes in are milkyway galaxy. Black holes are made by collapsed stars. Supermassive black holes might tie at many galaxies. A young star burns hydrogen at its core.

The laws are: (1) Every object moves in a straight line unless acted upon by a force. (2) The acceleration of an object is directly proportional to the object’s mass. (3) For every action, there is an equal and opposite reaction. The first law means that there is a natural tendency of objects to continue what they were already doing. All objects resist changes in their state of motion, if the absence of an unbalanced force occurs, an object in motion will stay in the same state of motion. The second law, means that the heavier the object is, the more force it requires to move the same distance as lighter objects. This can be expressed through a mathematical equation, F= M A. The third law, means that for every force there is a reaction force that is equal in size, but opposite in direction. This means that whenever an object pushes another object, it gets pushed back in the opposite direction equally as

he relationship between mass and weight can also be applied in context of the location of the moon. The gravitational pull on the moon is 1.622 m/s/s. Ones mass would not differ at all if they were on the moon, because mass is related to the amount of matter (stuff) that composes the object. The mass of an object will be the same no matter where in the universe that object is located. Mass is never altered by location, gravity, or other forces. A person would not have more weight on the moon, and in fact would have a decreased amount of weight. The weight of an object will vary according to where the object is located in the universe, because weight depends upon which planet is exerting the force and the distance the object is from the planet.

Type II supernova results from the rapid collapse and explosion of a massive star. For a star to explode as a type II supernova it must be several times more massive than the sun. it is estimated that their mass must be at least 8 times greater than that of the sun, but no more than 40-50 times the suns mass.

A blindingly bright star bursts into view in a corner of the night sky — it wasn't there just a few hours ago, but now it burns like a beacon. That bright star isn't actually a star, the brilliant point of light is the explosion of a star that has reached the end of its life, otherwise known as a supernova.

It is only after, when it is observed by scientists and others that the star is drawing nearer that the crisis begins. The planet is changed by the star. Cities and civilizations are wiped

A supernova is a marvelous thing that happens in space, and scientists are trying to use these explosions of stars to learn more about our expanding galaxy with the debris and elements that explode from the supernova, the largest explosion in space which can outshine many galaxies. Since the stars is a large distance away, when the supernova does happen, it would have actually happened a couple hundred years ago, because the light takes many years to reach our eyes. A supernova can happen in two different ways, known by a Type 1 supernova and a Type 2 supernova.

The Kingdom of the Sun was born when a star of fire fell from the heavens, the heat of the star was so immense that it decimated the valleys and greenery for a radius of 1,000,000