Example pages from Book - Introduction to AS and A2 Advance
... Starting with R1 set to the highest position, the readings on the voltmeter and ammeter are ...
... Starting with R1 set to the highest position, the readings on the voltmeter and ammeter are ...
Rotating White Dwarfs and Neutron Stars in - Padis
... configurations. We found the minimum rotation periods ∼ 0.3, 0.5, 0.7 and 2.2 seconds and maximum masses ∼ 1.500, 1.474, 1.467, 1.202 M⊙ for 4 He, 12 C, 16 O, and 56 Fe WDs respectively. By using the turning-point method we found that RWDs can indeed be axisymmetrically unstable and we give the rang ...
... configurations. We found the minimum rotation periods ∼ 0.3, 0.5, 0.7 and 2.2 seconds and maximum masses ∼ 1.500, 1.474, 1.467, 1.202 M⊙ for 4 He, 12 C, 16 O, and 56 Fe WDs respectively. By using the turning-point method we found that RWDs can indeed be axisymmetrically unstable and we give the rang ...
Geometry and Material Effects in Casimir Physics
... objects, leading to a fluctuation-induced force, usually called the Casimir force. Alternatively, one can regard the cause of these forces to be spontaneous charges and currents, which fluctuate in and out of existence in the objects due to quantum mechanics. The name ‘Van der Waals force’ is someti ...
... objects, leading to a fluctuation-induced force, usually called the Casimir force. Alternatively, one can regard the cause of these forces to be spontaneous charges and currents, which fluctuate in and out of existence in the objects due to quantum mechanics. The name ‘Van der Waals force’ is someti ...
The masses of nobelium and lawrencium isotopes, the mass
... minimum number of detected ions necessary for mass measurements is about 50 which is difficult to obtain for exotic nuclides with production rates smaller than 1 per hour. To this end, two mass measurement techniques, which have been either developed at SHIPTRAP (PhaseImaging Ion-Cyclotron-Resonance ...
... minimum number of detected ions necessary for mass measurements is about 50 which is difficult to obtain for exotic nuclides with production rates smaller than 1 per hour. To this end, two mass measurement techniques, which have been either developed at SHIPTRAP (PhaseImaging Ion-Cyclotron-Resonance ...
What Is Physics?
... The leftmost, small image is a computer model of a torus-shaped magnet that is holding a hot plasma within its magnetic field, shown here as circular loops. The central small image is of a human eye overlying the visible light portion of the electromagnetic spectrum. The image on the right is of a w ...
... The leftmost, small image is a computer model of a torus-shaped magnet that is holding a hot plasma within its magnetic field, shown here as circular loops. The central small image is of a human eye overlying the visible light portion of the electromagnetic spectrum. The image on the right is of a w ...
PHYSICS HOMEWORK #1 KINEMATICS DISPLACEMENT & VELOCITY
... The first quantitative step in adding these two vectors together is to break each vector into components that are either parallel or perpendicular to the x and y axes.The resultant R goes from the tail of the first vector to the tip of the last vector as shown. ...
... The first quantitative step in adding these two vectors together is to break each vector into components that are either parallel or perpendicular to the x and y axes.The resultant R goes from the tail of the first vector to the tip of the last vector as shown. ...
9 G P H
... 4.4 Creating a Displacement–Time Graph from a Velocity–Time Graph ..................................... 75 4.5 Getting Everything from the Versatile Velocity – Time Graph ............................................... 77 A few important concepts to remember ................................... ...
... 4.4 Creating a Displacement–Time Graph from a Velocity–Time Graph ..................................... 75 4.5 Getting Everything from the Versatile Velocity – Time Graph ............................................... 77 A few important concepts to remember ................................... ...
Static Electricity Name:
... a. When two objects made of different materials are rubbed together, they each acquire a charge. b. When two objects made of different materials are rubbed together, they will either be both charged positively or both charged negatively. c. When two objects made of different materials are rubbed tog ...
... a. When two objects made of different materials are rubbed together, they each acquire a charge. b. When two objects made of different materials are rubbed together, they will either be both charged positively or both charged negatively. c. When two objects made of different materials are rubbed tog ...
Mass versus weight
In everyday usage, the mass of an object is often referred to as its weight though these are in fact different concepts and quantities. In scientific contexts, mass refers loosely to the amount of ""matter"" in an object (though ""matter"" may be difficult to define), whereas weight refers to the force experienced by an object due to gravity. In other words, an object with a mass of 1.0 kilogram will weigh approximately 9.81 newtons (newton is the unit of force, while kilogram is the unit of mass) on the surface of the Earth (its mass multiplied by the gravitational field strength). Its weight will be less on Mars (where gravity is weaker), more on Saturn, and negligible in space when far from any significant source of gravity, but it will always have the same mass.Objects on the surface of the Earth have weight, although sometimes this weight is difficult to measure. An example is a small object floating in a pool of water (or even on a dish of water), which does not appear to have weight since it is buoyed by the water; but it is found to have its usual weight when it is added to water in a container which is entirely supported by and weighed on a scale. Thus, the ""weightless object"" floating in water actually transfers its weight to the bottom of the container (where the pressure increases). Similarly, a balloon has mass but may appear to have no weight or even negative weight, due to buoyancy in air. However the weight of the balloon and the gas inside it has merely been transferred to a large area of the Earth's surface, making the weight difficult to measure. The weight of a flying airplane is similarly distributed to the ground, but does not disappear. If the airplane is in level flight, the same weight-force is distributed to the surface of the Earth as when the plane was on the runway, but spread over a larger area.A better scientific definition of mass is its description as being composed of inertia, which basically is the resistance of an object being accelerated when acted on by an external force. Gravitational ""weight"" is the force created when a mass is acted upon by a gravitational field and the object is not allowed to free-fall, but is supported or retarded by a mechanical force, such as the surface of a planet. Such a force constitutes weight. This force can be added to by any other kind of force.For example, in the photograph, the girl's weight, subtracted from the tension in the chain (respectively the support force of the seat), yields the necessary centripetal force to keep her swinging in an arc. If one stands behind her at the bottom of her arc and abruptly stops her, the impetus (""bump"" or stopping-force) one experiences is due to acting against her inertia, and would be the same even if gravity were suddenly switched off.While the weight of an object varies in proportion to the strength of the gravitational field, its mass is constant (ignoring relativistic effects) as long as no energy or matter is added to the object. Accordingly, for an astronaut on a spacewalk in orbit (a free-fall), no effort is required to hold a communications satellite in front of him; it is ""weightless"". However, since objects in orbit retain their mass and inertia, an astronaut must exert ten times as much force to accelerate a 10‑ton satellite at the same rate as one with a mass of only 1 ton.On Earth, a swing set can demonstrate this relationship between force, mass, and acceleration. If one were to stand behind a large adult sitting stationary on a swing and give him a strong push, the adult would temporarily accelerate to a quite low speed, and then swing only a short distance before beginning to swing in the opposite direction. Applying the same impetus to a small child would produce a much greater speed.