CHAPTER 3 Methodology and Geophysical Data
... this base station value in order to calculate the gravity values along the traverse. The gravity values, thus computed must be corrected for latitude, elevation and topography in order to obtain the gravity values corresponding to some datum like geoid or ellipsoid. In addition the corrections for i ...
... this base station value in order to calculate the gravity values along the traverse. The gravity values, thus computed must be corrected for latitude, elevation and topography in order to obtain the gravity values corresponding to some datum like geoid or ellipsoid. In addition the corrections for i ...
Force, motion and machines
... The nuclei of atoms, which contain protons and neutrons, are held together by very strong pulling forces called ‘nuclear forces’. As protons are positively charged, they tend to repel each other. Therefore, as the nucleus remains intact, nuclear forces are greater than the repulsive electric field f ...
... The nuclei of atoms, which contain protons and neutrons, are held together by very strong pulling forces called ‘nuclear forces’. As protons are positively charged, they tend to repel each other. Therefore, as the nucleus remains intact, nuclear forces are greater than the repulsive electric field f ...
Chapter 7
... Gravitational Force, continued • The gravitational forces that two masses exert on each other are always equal in magnitude and opposite in direction. • This is an example of Newton s third law of motion. • One example is the Earth-moon system, shown on the next slide. • As a result of these forces, ...
... Gravitational Force, continued • The gravitational forces that two masses exert on each other are always equal in magnitude and opposite in direction. • This is an example of Newton s third law of motion. • One example is the Earth-moon system, shown on the next slide. • As a result of these forces, ...
PHYSICS 231 Review problems for midterm 1
... The reading of the scale equals the normal force provided by the scale. Write down Newton’s law for the forces acting on you: F=ma n-mg=ma (normal force n is pointing up, gravitational force is pointing down) The elevator is accelerating upwards, so a>0 and thus: n>mg which means that the weight y ...
... The reading of the scale equals the normal force provided by the scale. Write down Newton’s law for the forces acting on you: F=ma n-mg=ma (normal force n is pointing up, gravitational force is pointing down) The elevator is accelerating upwards, so a>0 and thus: n>mg which means that the weight y ...
Stacey Carpenter - University of Hawaii System
... change. It is the same! Momentum is conserved! Conservation means that there is the same amount before and after. Scientists love conservation. It means that they can look at a situation, and if it violates a law of conservation, they know there is something wrong with their observations or calculat ...
... change. It is the same! Momentum is conserved! Conservation means that there is the same amount before and after. Scientists love conservation. It means that they can look at a situation, and if it violates a law of conservation, they know there is something wrong with their observations or calculat ...
Physics Revision: Vectors and Scalars
... protractor (or set square) to make an angle of 900 and you then draw the 3 km line going east (to the right) at 900 to the 4 km and make it exactly 6cm long (1 km ≙ 2 cm; 3km ≙ 6cm). At the end of this line (at 6 cm) you have found the exact position of B. You now join A to B and measure the length ...
... protractor (or set square) to make an angle of 900 and you then draw the 3 km line going east (to the right) at 900 to the 4 km and make it exactly 6cm long (1 km ≙ 2 cm; 3km ≙ 6cm). At the end of this line (at 6 cm) you have found the exact position of B. You now join A to B and measure the length ...
Chapter #3 uniform-circular-motion
... As we said earlier, an object is in Uniform Circular Motion if its motion is in a circle of constant radius at constant speed. The direction of velocity is always changing, but the distance from the center of the circle remains the same, and so does the time it takes to travel completely aro ...
... As we said earlier, an object is in Uniform Circular Motion if its motion is in a circle of constant radius at constant speed. The direction of velocity is always changing, but the distance from the center of the circle remains the same, and so does the time it takes to travel completely aro ...
Good Vibes: Introduction to Oscillations
... magnitude must be directly proportional to the magnitude of the object's displacement from its equilibrium position. Mathematically, the restoring force F ⃗ is given by F ⃗ = −kx⃗ , where x⃗ is the displacement from equilibrium and k is a constant that depends on the properties of the oscillating ...
... magnitude must be directly proportional to the magnitude of the object's displacement from its equilibrium position. Mathematically, the restoring force F ⃗ is given by F ⃗ = −kx⃗ , where x⃗ is the displacement from equilibrium and k is a constant that depends on the properties of the oscillating ...
Notes on Relativistic Dynamics
... Then I present “why we need relativistic dynamics” (section 2.1), followed by one of the two “momentum motivations”, either the collision motivation (sections 2.2, 2.3, and 2.4) or the four-vector motivation (sections 3.1, 3.2 and 3.3). I leave the other motivation for reading. I’ve tried it both wa ...
... Then I present “why we need relativistic dynamics” (section 2.1), followed by one of the two “momentum motivations”, either the collision motivation (sections 2.2, 2.3, and 2.4) or the four-vector motivation (sections 3.1, 3.2 and 3.3). I leave the other motivation for reading. I’ve tried it both wa ...
1101 Lab 8 - Oscillations
... level, atoms oscillate within molecules, and molecules oscillate within solids. This molecular oscillation gives an object the internal energy that defines its temperature. Springs are a common example of objects that exert the type of force that will cause oscillatory motion. In this lab you will s ...
... level, atoms oscillate within molecules, and molecules oscillate within solids. This molecular oscillation gives an object the internal energy that defines its temperature. Springs are a common example of objects that exert the type of force that will cause oscillatory motion. In this lab you will s ...
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.