GuideFoot - Learn Together, Grow Smarter. Logo

Questions in Grade High-school

📝 Answered - Solve the equation. Check the solution. [tex]11-12 x-7-2 x=6[/tex] [tex]x=[/tex] $\square$ (Type an integer or a simplified fraction.)

📝 Answered - Find the exact value of $\csc 30^{\circ}$ in simplest form with a rational denominator.

📝 Answered - Anna needs to decide if the equation [tex]sin²0/1+cos0 = 1[/tex] is an identity. Choose 3 possible values for 0, substitute them into this equation, and simplify. What do your results indicate about the equation [tex]sin²0/1+cos0 = 1 – cos 0[/tex]? Show all your work.

📝 Answered - Which graph represents a line with a slope of $-\frac{2}{3}$ and a $y$-intercept equal to that of the line $y=\frac{2}{3} x-2$?

📝 Answered - In a chemistry lab, an unknown liquid boils at 148 K. What is its boiling point in degrees Fahrenheit? Include only the numerical value of your answer with a negative, if needed. This means, no units! Report with only one decimal place.

📝 Answered - Solve each equation for [tex]$p$[/tex]. 7. [tex]$xp + yp = z$[/tex] 8. [tex]$n=\frac{p-k}{j}$[/tex] 9. [tex]$a=b+cp$[/tex] 10. [tex]$\frac{p+3}{m}=-1$[/tex]

📝 Answered - What does Thurston mean when he says, "My name has served as a perfect window through which to examine my experience of blackness"? Use a quote from the text to support your explanation. Sentence Stem: Thurston's name has helped him explore Blackness because... This is shown when he says, " "

📝 Answered - 17. 2071 Set D Q.No. 10a Ultraviolet light of wavelength [tex]$3.6 \times 10^{-7} m$[/tex] is made to fall on a smooth surface of potassium. Determine maximum energy of emitted photo electrons and stopping potential. [4] Ans: [tex]$1.5 eV , 1.5 V$[/tex] 18. 2070 Supp. Set [tex]$B$[/tex] Q.No. 10a Electrons with maximum kinetic energy of 3 eV are ejected from a metal surface by ultra-violet radiation of wavelength [tex]$1.5 \times 10^{-7} m$[/tex]. Determine work function, threshold wavelength and the stopping potential for the metal (Planck's constant, [tex]$h =6.62 \times 10^{-34} Js$[/tex] ) [4] Ans: [tex]$5.275 eV ., 2.35 \times 10^{-7} m, 3 V$[/tex] 19. 2070 Set C Q.No. 10b The photoelectric threshold wavelength of a tungsten surface is 272 nm . Calculate the maximum velocity of the electrons ejected from this tungsten surface by ultraviolet radiation of frequency [tex]$1.45 \times 10^{15} Hz$[/tex]. ([tex]$h=6.62 \times 10^{-34} Js, c=3 \times 10^8 m / s, me=9.1 \times 10^{-31} kg$[/tex]) Ans: [tex]$7.1 \times 10^5 m / sec$[/tex]

📝 Answered - Solve the inequality. Express your answer using set notation and interval notation. [tex]$\frac{1}{2}(x-5)>x+6$[/tex] The solution is expressed in set notation as [tex]$\lbrace x \mid$[/tex] [$\square$] [tex]$\rbrace$[/tex]. The solution is expressed in interval notation as [$\square$].

📝 Answered - What is the equation of the line that passes through the point $(6,2)$ and has a slope of $-\frac{1}{2}$?