We have a narrow slit that is oriented vertically. The thickness of the slit is 2B. The width, W, and the length, L, of the slit are both much larger than the thickness. A fluid is being forced through the top of the slit and runs out of the bottom. Determine the shear stress and velocity distribution through the slit. Sketch the shape of the velocity profile based on the velocity distribution you obtained. Determine the maximum velocity of the fluid within the slit and where within the slit it occurs. Find the analog of the Hagen-Poiseuille equation for this system.
In: Other
A power press makes steel pressings. The energy required for each pressing is 5000J with each pressing taking 1s. The time taken to remove the pressing and get the material ready for the next pressing is 4s.If the press is operated by an electric motor which runs continuously with a flywheel used to supply the extra torque required for the pressing. Determine the power of the motor that is required, the energy that has to be supplied by the flywheel and the moment of inertia of the flywheel if it’s speed is not to drop by more than 30 RPM from a speed of 600 RPM.
In: Mechanical Engineering
In: Physics
While talking to your friend about your week, you mentioned that you had just learned about standard costing which plays a vital role in variance analysis. This topic interested your friend, who runs a bakery and wants to learn what he or she would need to do to set up a standard costing system for the bakery. This gives you an opportunity to share your new knowledge with your friend. What would you tell your friend about standard costing?
In: Accounting
A 1.50-kg block is on a frictionless, 30 degrees inclined plane. The block is attached to a spring (k = 40.0N/m ) that is fixed to a wall at the bottom of the incline. A light string attached to the block runs over a frictionless pulley to a 60.0-g suspended mass. The suspended mass is given an initial downward speed of 1.40m/s. How far does it drop before coming to rest? (Assume the spring is unlimited in how far it can stretch.)
y = _____ m
Please show steps I am confused.
In: Physics
Hope Pty Ltd is the trustee of Jones Family Trust. The trust property is worth $500,000. Hope Pty Ltd runs an internet café on behalf of the trust. The trust deed notes that the trustee can only enter into contracts in relation to running the internet café. However, Hope Pty Ltd, on behalf of the trust, entered into several transactions worth $200,000. These transactions were in relation to building a railway in India. Hope Pty Ltd pays the $200,000.
Advise Hope Pty Ltd on its right of indemnification from the trust property.
In: Accounting
Jane Pty Ltd is the trustee of Moore Family Trust. The trust property is worth $450,000. Jane Pty Ltd runs a cafe on behalf of the trust. The trust deed notes that the trustee can only enter into contracts in relation to running the cafe. However, Jane Pty Ltd, on behalf of the trust, entered into several transactions worth $150,000. These transactions were in relation to building a railway in Sweden. Jane Pty Ltd pays the $150,000.
Advise Jane Pty Ltd on its right of indemnification from the trust property.
In: Accounting
A merry-go-round with a moment of inertia of 750 kgm^2 and a radius of 2.55 m is rotating with an angular velocity of 9.42 rad/s clockwise (as viewed from above.) A child, whose weight is 334 N, runs at 2.76 m/s tangent to the rim of the merry-go-round and jumps onto it in the direction opposite of its sense of rotation. With what angular speed does the merry-go-round rotate after the child jumps onto its edge?
I'm pretty sure the answer is going to be negative.
In: Physics
The Economic Problem is a fundamental problem of Economics
Write an 800 words essay about this.
Identify the key concepts relevant to answering the question
Links these concepts together and logically to make an argument that runs through the whole essay.
In: Economics
The Economic Problem is a fundamental problem of Economics
Write an 800 words essay about this.
Identify the key concepts relevant to answering the question
Links these concepts together and logically to make an argument that runs through the whole essay.
In: Economics