Velocity(Angular,Linear),Viscosity(Dynamic,Kinematic),Volume,Weight,Work In three dimensions, the torque is a pseudovector for point particles, it is given by the cross product of the position vector (distance vector) and the force vector. Just as a linear force is a push or a pull, a torque can be thought of as a twist to an object. Torque, moment, or moment of force is rotational force. Time is the indefinite continued progress of existence and events that occur in apparently irreversible succession from the past through the present to the future. The most commonly used scales are the Celsius scale, denoted in ☌ (informally, degrees centigrade), the Fahrenheit scale (☏), and the Kelvin scale. Temperature is measured with a thermometer, historically calibrated in various temperature scales and units of measurement. When stressed, the body thinks it is under attack and switches to ‘fight or flight’ mode, releasing a complex mix of hormones and chemicals such as adrenaline, cortisol and norepinephrine to prepare the body for physical action. The average speed of an object in an interval of time is the distance travelled by the object divided by the duration of the interval the instantaneous speed is the limit of the average speed as the duration. In everyday use and in kinematics, the speed of an object is the magnitude of its velocity ) it is thus a scalar quantity. Other geometric properties used in design include area for tension and shear, radius of gyration for compression, and moment of inertia and polar moment of inertia for stiffness. Section modulus is a geometric property for a given cross-section used in the design of beams or flexural members. ![]() Various units are used to express pressure. Gauge pressure (also spelled gage pressure) is the pressure relative to the ambient pressure. Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. The standard unit is the watt,symbolized by W. ![]() The common symbol for power is the uppercase letter P. Power is the rate at which electrical energy is converted to another form, such as motion, heat, or an electromagnetic field. A quantity expressing a body’s tendency to resist angular acceleration, which is the sum of the products of the mass of each particle in the body with the square of its distance from the axis of rotation.
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