Numerade

Questions asked

BEST MATCH

For a website that implements the MVC pattern, there is usually one controller file ____. 1. for each application 2. for each model 3. for each view 4. for each user

View Answer

BEST MATCH

A graduate school wishes to require a vendor-neutral security certification as one condition for entry into its information security program. Which of the following certifications could be a candidate? Oracle OCA CompTIA Security+ Microsoft MCSE Cisco CCNA-Security

View Answer

BEST MATCH

Evaluate the given integral using the substitution (or method) indicated. (Remember the constant of integration.) int (2x-6)^(4)dx; shortcut Evaluate the given integral using the substitution (or method) indicated. (Remember the constant of integration.) (2x - 6)4 dx; shortcut

View Answer

BEST MATCH

In order for a firm to continue to earn economic profits, there must be perfectly elastic demand for their product. free entry and exit. barriers to entry. diseconomies of scale.

View Answer

BEST MATCH

Which force of evolution is described in this scenario? Explain in 1-2 sentences why you chose that response. Individuals with more webbing between their toes are more efficient swimmers. As sea levels rise, they have better access to resources, both on land and in the expanding oceans. This improves their reproductive success. Over many generations, extra toe webbing will become increasingly common in the population.

View Answer

BEST MATCH

Question 3 A cartel model of oligopoly predicts that ________. ? Firms will choose output independently ? Firms will choose prices independently ? Firms will never cooperate ? Firms act together to set output and price like a monopoly ? Firms never have incentives to deviate from the cartel agreement Question 4 Manufacturers' brands are also called ________. ? Channel brands ? Retail brands ? National brands ? Private labels ? Exclusive brands

View Answer

BEST MATCH

Floating exchange rate is: - A policy that allows the foreign exchange market to set exchange rates. - The exchange rate that equalizes the prices of internationally traded goods across countries. - The exchange rate that does not equalize the prices of internationally traded goods across countries. - A policy that does not allow the foreign exchange market to set exchange rates.

View Answer

BEST MATCH

3.Gas Clouds and Star Formation Many gas clouds are observed in the region of space near the Milky Way galaxy,and it is assumed that such clouds exist throughout the universe. a Some of these clouds are diffuse clouds of hydrogen with temperatures of 50 K.den sities of 5 10 particles/m and total masses in the range of 1-100 solar masses (Mo.If we assume such clouds are entirely composed of HIie.atomic hydrogen with =1.will such a cloud collapse to form a star? b Other gas clouds,called Giant Molecular Clouds,are also observed.These contain material in addition to hydrogen (mostly helium,but with more complex molecules as well.These clouds are hugewith total masses of up to 10Mo,and contain small dense regions within them. These denser regions containing between 10-1000 Mo of materialhave temperatures of 150 K and densities of 1013-10particles/m.If it is assumed that such clouds are 75% H and25%Hewith =1.23ean these dense regions collapse to form a star? c Assuming that at least one of the two scenerios described above will result in the col- lapse of the gas cloud,what is the miniumum initial size of the collapsing cloud 4.Collapsing Gas Clouds In the calculation of the free-fall time we assumed that there were no collisions between the particles in the gas cloud ie. no intermal pressure and that the collapse was an isothermal process. a Assuming that the material in a gas cloud behaves as an ideal gas. i What is the initial pressure in the collapsing gas cloud described in the above scenerios? ii. Is the assumption that there is no pressure reasonable? bAssuming that the temperature remains constant isothermal collapse). i. What will the radius of the collapsing object be when the pressure has increased to some significant value1 atmosphere?I atm 10Pa ii.How docs this size compare to the size of the sunRg=6.9610m iii.What is this expressed in astronomical units?1A.U.=1.49610m c When estimating the minimum Jeans'mass during the collapse and fragmentation pro cess we used a temperature of 1000 K as the point at which the collapse process would move from being an isothermal (constant temperature)to an adiabatic (constant energy) process.. i. What are the processes by which electromagnetic radiation is absorbed by matter? ii.What is functionally different aboout the constitutents of the gas cloud at T=I00 KvsT=1000K2 ii. How would this affect the absorption of radiation iv. Why did we choose the value of 1000 K to approximate when the collapse moves from being an isothermal to an adiabatic process?

View Answer

BEST MATCH

. $ +4.0 \mu \mathrm{C} $, are fixed in place and separated by $ 3.0 \mathrm{~m} $. (a) At what the positive charge. What would be the forint: The spot does not necessarily lie between the two charges.) (b) on a charge of $ -5.0 \mu \mathrm{C} $ placed at this spot? Ans: $ (3 \mathrm{~m}, 0 \mathrm{~N}) $

View Answer

BEST MATCH

A pulley is keyed to a shaft of diameter 2.0 inch by means of a rectangular key. The key with is 0.5 inch and its height is 0.375 inch. The shaft transmits 40 hp at 150 rpm. The key is made of 1020 CD steel ($S_y = 57$ kpsi), the pulley material is AISI 1045 HR steel, and the shaft is made of AISI 1045 HR steel ($S_y = 45$ kpsi). For a minimum safety factor 1.5 determine the followings, a. Key length based on shear of key b. Key length based on bearing on Key c. Key length based on bearing on shaft or bearing on Pulley, same materials d. Recommended key length $S_{sy} = 0.577 \ S_y$, $T = 63025H/n$, where: $T$= torque (in.lbf), $n$ = rpm, $H$ = horse power

View Answer

christopher o.