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Questions in Grade College

[Done] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Done] What defines a value-added activity? A. Adds value that the customer is willing to pay for B. Saves money for the business C. Reduces cycle time D. Is essential for internal operations

[Done] Which of the following are factors associated with an increased chance of a young person trying drugs? A. having used tobacco at a young age B. engaging in risky sexual behavior C. coming from a wealthy family D. having a dysfunctional family life

[Done] Calculate the pH at $25^{\circ} C$ of a 0.68 M solution of sodium propionate $\left( NaC _2 H _5 CO _2\right)$. Note that propionic acid $\left( HC _2 H _5 CO _2\right)$ is a weak acid with a $p K_a$ of 4.89. Round your answer to 1 decimal place. $pH=$

[Done] On average, how much of the sun's energy is absorbed by Earth's atmosphere and clouds, without reaching Earth's surface? A. 20 percent B. 30 percent C. 40 percent D. 50 percent

[Done] Solve for $x$ in the equation $3 x^2-18 x+5=47$ A. $x=3 \pm \sqrt{23}$ B. $x=3 \pm \sqrt{51}$ C. $x=3 \pm \sqrt{41}$ D. $x=3 \pm \sqrt{5}$

[Done] Select the correct answer. What is energy? A. a change that appears in an object when force is applied B. the property of a body that gives it mass C. the amount of heat produced by a body D. the ability of an object to undergo change E. the ability of a body to move

[Done] Use the drawing tools to graph the solution to this system of inequalities on the coordinate plane. [tex]\begin{array}{l} y\ \textgreater \ 2 x+4 \ x+y \leq 6\end{array}[/tex]

[Done] Why did John Adams defend the British soldiers involved in the Boston Massacre? A. He thought all people should have legal representation B. He loved British soldiers C. He was a devout loyalist D. All of the above

[Done] Which describes the cause and impact of a wildfire? A. A controlled fire that is used to clear land and forest for agriculture. B. An uncontrollable fire that spreads quickly and produces air pollution. C. An uncontrollable fire that spreads quickly but primarily affects only barren land. D. A controlled fire in a developed area that is used to clear land for homes.