4. (30) Water (r = 1000 kg/m3 and µ = 1.12 x 10-3 Pa-s) is siphoned through a 2mm diameter tube 1m long, with the tube exit 0.5m below the surface of the water. a) Write the governing equation
Simplify to get an equation in V only
Solve for V
Is the flow laminar or turbulent?
In: Mechanical Engineering
A pre-quantum model of the hydrogen atom treats the electron as a point particle floating in a spherical ball of uniform positive charge out to some radius V. Show that the electron in this model exhibits simple harmonic motion, and find the angular frequency of oscillation. If the radius V is the size of an atom, say 0.5 nm, what is the frequency of oscillation?
In: Physics
A spherical drop of water carrying a charge of 10 pC has a potential of 515 V at its surface (with V = 0 at infinity).
(a) What is the radius of the drop?
_1.75e-4__m
(b) If two such drops of the same charge and radius combine to form a single spherical drop, what is the potential at the surface of the new drop?
________V
show all work
In: Physics
You are given an undirected graph G = ( V, E ) in which the edge weights are highly restricted. In particular, each edge has a positive integer weight from 1 to W, where W is a constant (independent of the number of edges or vertices). Show that it is possible to compute the single-source shortest paths in such a graph in O(E+V) time.
In: Computer Science
1.A circuit of resistors connected in series is plugged in a 120 V outlet. What can you tell about the voltage on each of resistor and current in each resistor?
2.A circuit of capacitors connected in parallel is plugged in a 120 V outlet. What can you tell about the voltage on each capacitor and current in each capacitor?
In: Physics
The struggle for women’s rights has made some important strides and experienced a number of setbacks over the last 30 years. Discuss the “Equal Rights Amendment,” Title IX of the 1972 Education Act, the Supreme Court’s decisions in Franklin v. Gwinnet County Public Schools (1991), and Ledbetter v. Goodyear Tire and Rubber Co. (2007)
In: Psychology
An object is initially traveling at a velocity of 12 m/s. It then begins to change it’s velocity according to the function ?=2.5?+3? v = 2 . 5 s + 3 a , where v is the velocity of the object, s is the objects position, and a is the acceleration. Determine the velocity of the object 30 meters after the velocity begins to change. (17.5 m/s)
In: Mechanical Engineering
Q1
Five capacitors are connected across a potential difference Vab as shown in Figure. Because of the dielectrics used, each capacitor will break down if the potential across it is V=61 V. What should be the value of Vab (with one decimal place) if you reach the break down voltage one of the capacitor.
Q2
Suppose after charging a 3.7
In: Physics
In discharge over V-notch experiment, calibration curve (using log Q vs log H) is plotted. How would you interpret results which, when plotted logarithmically, fall on a line which is not straight but slightly curved? and, What are the effects of a change in the V-notch angle on the discharge equation and the accuracy of flow measurement?
In: Civil Engineering
Part Q: A block of mass m moving due east at speed v collides with and sticks to a block of mass 2m that is moving at the same speed v but in a direction 45.0∘ north of east. Find the direction in which the two blocks move after the collision.
Express your answer as angle theta in degrees measured north of east.
In: Physics