2022年10月31日 · The viscous force within a fluid will depend on the velocity gradient (aka shear rate) within the fluid. That does not mean that the viscosity is a function of velocity. Viscosity is the ratio between the viscous force and the shear rate. As long as viscous force and shear rate have a linear relationship, viscosity will have a single fixed value.

2008年10月26日 · 1. How do you find the velocity of an object if you are given the x and y components of the velocity? 2. Not sure! 3. It makes the most sense to use the Pythagorean Theorem to find the magnitude then trig to find the angle, but I've got a classmate telling me you simply add together the x and y components. Which is it?

2008年2月20日 · Hi, I conducted a circular motion experiment--with a rubber bung & string through a plastic tube. I changed the radius of the string every trial, calculated the amount of time for one revolution, and from that derived velocity and velocity^2. With my data, I graphed Velocity^2 against Radius. I found a linear line of best fit for the graph.

2016年6月24日 · No it doesn't. You're mixing symbols with units, s is short for seconds. eg velocity is metres per second (m/s) In the kinematic equations (SUVAT) 's' is used to represent distance (which has units of metres) s is distance in metres (m) u is initial velocity in metres per second (m/s) v is final velocity in metres per second (m/s)

2011年3月17日 · So, I was thinking of using (momentum) mvr=hn/2(pi) which works out to give a nice expression for the velocity, but it fails in the next two parts of the problem. I also looked at the equation for the bohr radius: a = hbar^2/ke^2m but again, I'm not sure that this would work with the rest of the problem. The Attempt at a Solution

2015年10月9日 · In the Principles of Physics book chapter two in checkpoint 2 claims that If velocity of object is zero its a constant velocity.I am confused cause v=0 means there's no motion.Without motion we can't talk about constant velocity.I am confused.(The equation of object is (x=-5) and the exact question

2007年9月12日 · This is the terminal velocity. Now suppose the ball is fired downward by a canon from the helicopter with an initial velocity that exceeds the terminal velocity. The upward drag acceleration will exceed the downward gravitational acceleration, making the ball slow down until it reaches the terminal velocity.

2010年4月22日 · I've seen it in escape velocity problems, though with an R instead of h. I've seen it with conservation of momentum applications, and it's similar to PE = mgh. Yesterday my professor was discussing Bernoulli's equation and this equation came up again. I was just wondering how it can be applied to so many different situations...

2015年11月17日 · ω = angular velocity in rad / s 2⋅π corresponds to one full rotation (2⋅π rad = 360°). If you want to know how many rotations are made in one second, you calculate ω / (2⋅π) = f with f = frequency in s-1. Now you calculated how many …

2011年2月8日 · A block of mass 0.3 kg and spring constant 24 N/m is on a frictionless surface. If the block is set into motion when compressed 3.5 cm, what is the maximum velocity of the block? How much is the spring compressed when the block has a velocity of 0.19 m/s? Homework Equations F = -kx The Attempt at a Solution m = 0.3 kg k = 24 N/m