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Relationship between viscosity and velocity in fluid mechanics The relationship between viscosity and velocity in fluid mechanics is clarified: viscosity is an intrinsic property of a fluid that remains constant regardless of the flow velocity The viscous force, however, is dependent on the velocity gradient, also known as shear rate In laminar flow, the viscous force scales proportionately with the velocity gradient, but viscosity itself does not
Is velocity ever a scalar quantity? - Physics Forums I thought velocity was always a vector quantity, one with both magnitude and direction When it came to the suvat equations, where v = final velocity, and u = initial velocity, I thought both of those were vector quantities, e g; v (final velocity) 112km hr North u (initial velocity) 0km hr
Calculating Nozzle Flow Rate - Physics Forums Calculating Nozzle Flow Rate To work out the flow rate of water from a nozzle we need to work out the volume in a given period of time To do this we work out the area of the nozzle and then multiply it by the velocity of the water coming from the nozzle to give us volume per unit of time
Average Speed vs. Velocity: Explained - Physics Forums Investigate the relationship between speed, velocity, and acceleration in motion analysis Students of physics, mathematicians, and educators seeking a deeper understanding of motion concepts, particularly in differentiating between speed and velocity, as well as those interested in advanced mathematical applications in physical trajectories
Can you have a negative average velocity? • Physics Forums Negative average velocity is achievable in a multi-dimensional context, particularly when considering directional movement For instance, if a vehicle travels north at 10 mph for one hour and then south at 10 mph for another hour, the average velocity is zero, as the displacement returns to the starting point However, if the vehicle continues south for a third hour, the average velocity
Difference between rotational and angular velocity The discussion clarifies the distinction between rotational velocity and angular velocity Angular velocity is defined as the rate of change of angle over time, measured in radians per second, while rotational velocity can refer to either the number of revolutions per unit time or the linear velocity of a point on the circumference of a circle
Velocity of an Object Dropped from Height: Law Explained The discussion clarifies that the velocity of an object dropped from a height positively correlates with the height due to the Law of Conservation of Energy As an object falls, its potential energy is converted into kinetic energy, resulting in increased velocity with greater height While this principle holds true in a vacuum, it is essential to consider factors such as air resistance and
Why Is Initial Velocity Not Always Zero? • Physics Forums The discussion clarifies that the initial velocity of an object is not always zero, particularly when considering the moment it leaves the thrower's hand The term "initial velocity" is defined as the speed of the object at the end of a brief acceleration phase, which is often overlooked For example, if a ball is thrown with a final speed of 98 m s, this speed is considered its initial