Module M2.6 Scalar product of vectors
... The section ends with a discussion of the way in which scalar products may be used to find the projection of one vector on to another, the component of a vector in a given direction and the angle between two known vectors. This module also introduces the idea of a vector field. You have probably se ...
... The section ends with a discussion of the way in which scalar products may be used to find the projection of one vector on to another, the component of a vector in a given direction and the angle between two known vectors. This module also introduces the idea of a vector field. You have probably se ...
3 EQUILIBRIUM - Chulalongkorn University: Faculties and
... equilibrium, the wrench resultant of all forces acting on it is zero; i.e. ...
... equilibrium, the wrench resultant of all forces acting on it is zero; i.e. ...
AP Physics - Static Electricity
... thickness), a positive charge is brought near the electrode. The free electrons flow to the top ball, attracted by the positive charge. The inner conductor has a positive charge because the free electrons have made their departure. The outer conductor is also polarized. Just across the insulator is ...
... thickness), a positive charge is brought near the electrode. The free electrons flow to the top ball, attracted by the positive charge. The inner conductor has a positive charge because the free electrons have made their departure. The outer conductor is also polarized. Just across the insulator is ...
physa_a2_c_nir_notes1_launch - Mathematics and Physics Chella
... 1 The rotating part of an electric fan has a moment of inertia of 0.68 kg m2. The rotating part is accelerated uniformly from rest to an angular speed of 3.7 rad s−1 in 9.2 s. Calculate the resultant torque acting on the fan during this time. 2 A solid circular disc of mass 7.4 kg and radius 0.090 m ...
... 1 The rotating part of an electric fan has a moment of inertia of 0.68 kg m2. The rotating part is accelerated uniformly from rest to an angular speed of 3.7 rad s−1 in 9.2 s. Calculate the resultant torque acting on the fan during this time. 2 A solid circular disc of mass 7.4 kg and radius 0.090 m ...
The Effects of Simple Objects on the Electric Field of
... certain phases are more perturbed than others. Some EOD phases have both invariant and nonzero amplitude with respect to object distance. The relative amplitudes of the double peaks of the EOD and the object perturbation at the tail (Fig. 1D) are also opposite each other. To understand what may caus ...
... certain phases are more perturbed than others. Some EOD phases have both invariant and nonzero amplitude with respect to object distance. The relative amplitudes of the double peaks of the EOD and the object perturbation at the tail (Fig. 1D) are also opposite each other. To understand what may caus ...
Weightlessness
Weightlessness, or an absence of 'weight', is an absence of stress and strain resulting from externally applied mechanical contact-forces, typically normal forces from floors, seats, beds, scales, and the like. Counterintuitively, a uniform gravitational field does not by itself cause stress or strain, and a body in free fall in such an environment experiences no g-force acceleration and feels weightless. This is also termed ""zero-g"" where the term is more correctly understood as meaning ""zero g-force.""When bodies are acted upon by non-gravitational forces, as in a centrifuge, a rotating space station, or within a space ship with rockets firing, a sensation of weight is produced, as the contact forces from the moving structure act to overcome the body's inertia. In such cases, a sensation of weight, in the sense of a state of stress can occur, even if the gravitational field was zero. In such cases, g-forces are felt, and bodies are not weightless.When the gravitational field is non-uniform, a body in free fall suffers tidal effects and is not stress-free. Near a black hole, such tidal effects can be very strong. In the case of the Earth, the effects are minor, especially on objects of relatively small dimension (such as the human body or a spacecraft) and the overall sensation of weightlessness in these cases is preserved. This condition is known as microgravity and it prevails in orbiting spacecraft.