Author: Anonymous

[example continued…] A researcher is interested in understanding the online shopping habits of college students in the US. To answer this question, the researcher conducts a survey of 200 randomly selected college students from across the US. Of these 200 students, 138 of them (69%) reported that they regularly shop online. The entire group of college students in the US is an example of a _________.

[example continued…] For the following scores, [7,4,4,3,3,3] the Sum of Squares (SS) equals

[example continued…] Sophia’s  Test                                             Blake’s Test   Sophia’s Score: 85                                    Blake’s Score: 88 Class Average: 80                                    Class Average: 86 Standard Deviation: 4                           Standard Deviation: 2   According to their z scores, who’s score was more impressive?

Question C: The following circuit has a switch that opens at t=0. The resistor R is 6 ohms, Vi is 24 volts. Answer the following questions regarding this circuit.

Assume a motor running on A, B, and C balanced currents, and their magnitude is 10A. Find the corresponding d-axis quantity using “park’s” transformation if the d-axis leads the q-axis by 90 electrical degrees; the angle is between the q and a-axis. Here, the angle is 240 degrees, and the scaling factor of the d-axis is 23.

The following system is described by  T e   =   J d ω d t   +   B ω   +   T l J   =   0 . 01   k g m 2 ,   B   =   0 . 01   N m / r a d s – 1 ,   T l   =   48   N m Screenshot 2023-10-11 134350.png What is the value of electrical torque  T e at 1ms?

The top crossbar for a gantry crane is to be constructed out of 6 × 2.157 channel (see table below for geometric properties) and with a length L = 8 feet. The channel is implemented as shown in the close-up so that it can be considered as a simply-supported beam that bends about the 1-1 axis. It is desired that the crane be used to repeatedly lift a weight at the midpoint of the crossbar. Consider the weight as a point force acting through the centroid of the channel that varies between 0 lbf and 9,000 lbf. The channel material is hot-rolled AISI 1040 (Sut = 76 ksi, Sy = 42 ksi), and you don’t need to consider any stress concentrations or the weight of the channel crossbar. Determine the following: The maximum bending stress (σmax) in the crossbar (the shear stress can be ignored in the analysis) The modified endurance limit (Se) for this application with 95% reliability The factor of safety with respect to infinite life (nf) using the Modified Goodman criteria The number of cycles (N) it is expected to last before fatigue failure Write down all your work to scan and submit, including a free-body diagram and bending moment diagram for the crossbar. σmax = [stress] ksi (round answer to 1 decimal place)Se = [Se] ksi (round answer to 1 decimal place)nf = [nf] (round answer to 2 decimal places)N = [N] (round answer to nearest thousand; enter “infinite” if infinite life is predicted)    

Aschenputtel / liegen / in den Aschen / müssen

Der Prinz / können / für drei Tage / die richtige Braut / nicht finden

Strong Verbs. Fill in the blanks with the correct verb form. Keep in mind the vowel changes of strong verbs like:  fahren; tragen; schlagen; laden; wachsen; waschen; schaffen Infinitiv Präsens Präteritum Perfekt fahren er [faehrt] er [fuhr] Er ist [gefahren] . 1. Das Kind hat den Ball [geschlagen]  (schlagen; Perfekt). 2. Er [treagt] (tragen; Präsens) eine neue Jacke. 3. Gestern hat die Frau ihre schmutzige Jacke [gewaschen]  (waschen; Perfekt)