Then Kaku states that force fields can do more than deflecting laser beams because it can levitate objects by the use of magnetic force fields. To support that, he explains that when we place two magnets opposite to each other, the two magnets will repel each other. However he wrote that making force fields and to levitate heavy objects is nearly impossible since we lack advanced technology. For my response, Kaku doesn’t completely explain everything. Suppose that you have a structure on a planet or a spaceship in the middle of nowhere, and suppose you don't want the force field on all the time either because there are times when protection isn't needed.
They changed because the molecules of hydrogen and helium were moving so fast that they eventually escaped the Earth. 14. Explain how the greenhouse effect works and how it relates to global warming. The greenhouse effect is when radiation at visible wavelengths passes freely through the atmosphere and is absorbed at the ground. The ground heats up and emits infrared radiation.
That's gravity- the force of attraction between all objects in the universe. 2 On Earth, it keeps people and objects from flying off into space. Gravity even keeps our air from floating off into space! An object's weight depends on the strength of the force of gravity. The pull of gravity is different on different bodies in space so weight varies on different planets or moons.
Centrifugal Force - Is the apparent force that draws a rotating body away from the center of rotation. It is caused by the inertia of the body. 8. Centripetal Force - Is a force that makes a body follow a curved path: its direction is always orthogonal to the velocity of the body, toward the fixed point of the instantaneous center of curvature of the path. 9.
Because its density is so high, neutrons spin in the same way that electrons do so must obey the Pauli Exclusion Principle. 6. A pulsar does not pulse, it emits beams of radiation that sweep around the sky as the neutron star rotates, and astronomers detect pulses when they sweep over the Earth. 11. Sometimes in binary systems, mass flows into a hot accretion disk around the neutron star and causes the emission of x rays.
The illusion is based off of the moon’s size and the objects and landscapes connected with it. When away from objects the moon then has even more of an illusion to you than normal because it has a problem with consistency of
When the hotspots on the earth’s surface erupt, they send charged particles at the earth. The earth’s magnetic field however, deflects these away from the earth. As the poles shift, a weak spot in the magnetic field is exposed. This allows clear path for those particles. Typically it wouldn’t be that bad, nothing suntan and a nice day inside the house wouldn’t fix, but if the hotspot gets as large as scientists say, this spells immediate disintegration for anyone and anything on the earth’s surface.
Describe two differences between ptolemy’s and Copernicus’s models- What is at the centre of the model and the way in which the planets followed smaller circles in their orbits in ptolemy’s model. 3. Describe two similarities between the two models- The number of planets and the circular orbits are the same. 4. Suggest one way in which our current model of the solar system is different from Copernicus’s- There are more planets because we have more scientific equipment to look out further into space so we discover new things in space.
The people who are in favor of continuing the Mars exploration program are quick to point out that if every cent of the money allocated to their program were to be applied to the federal deficit, it would not even make a dent. Also, if the money was to be divided evenly among all of the poor in the country; there would not be enough to make any significant difference in their standard of living. It remains to be seen if all the money invested in exploring Mars will actually have any long term benefits for
1 AU b. 149,600,000 km c. 8.3 light-minutes d. all of the above 5. Distances between stars are usually measured in a. light-minutes b. astronomical units c. light-days d. light-years 6. Einstein developed an equation that changed ideas about the sun’s energy source by describing the relationship between a. mass and energy b. gravity