Exams & Certification

The roller coaster ride starts from rest at point A. Assume friction is negligible. Rank the following quantities from greatest to least at each point.a.   PEb.   KEc.   Speed The Correct Answer and Explanation is :. Assumptions: Points: Let’s assume there are three main points in the ride: Point A […]

Rank the points in order of gravitational potential energy, from greatest to least. The Correct Answer and Explanation is : Gravitational potential energy (GPE) is determined by the height of an object above a reference point, typically the ground or a chosen zero height level. The equation for gravitational potential energy is: [U = mgh]

The magnetic field in the picture is uniform and into the page.Suppose that the loop is flexible, and that its radius is decreasing with time. Assume that the magnetic flux through the loop is positive when the magnetic field points into the page.The magnetic flux through the loop is ing (increasing/decreasing)The induced magnetic field will

Find the indefinite integral. integral csc^2(x/5)dx Observe that is the derivative of 1/5x. Let g(x) = 1/5x. Multiply and divide the given integral integral csc^2(x/5) dx by 1/5. Therefore, the integral becomes integral csc^2 (x/5)(1/5) dx. Now, g(x) = x/5, g'(x) = 1/5. Define f(g(x)) = csc^2(x/5), such that f(x) = csc^2 Rewrite the given

isn’t true that -OCH3 (methoxy group) The methoxy group is electron withdrawing by the inductive effect of the oxygen atom, since the electronegativity of oxygen is 2.6??? However in EAS, -OCH3 is EDG (electron donating group), why The Correct Answer and Explanation is : You’re correct that the methoxy group (-OCH₃) contains an oxygen atom,

The backbone of DNA molecule is made of a. nucleotides  b. alternating phosphates and bases  c. alternating bases and sugars  d. alternating sugar and phosphate moleculesThe backbone of DNA molecule is made of?  a.nucleotides  b.alternating phosphates and bases  c.alternating bases and sugars  d.alternating sugar and phosphate molecules The

Solve each equation. Remember to check for extraneous solutions.1) sqrt(81x) – 5 = 42) sqrt(2a – 17) = sqrt(10 – a)3) – 4 = – 9 + sqrt(3n + 7)4) 6 = 1 + sqrt(5x)5) 49 = 7sqrt(- 1 – 10n)6) sqrt(19a – 2) + 5 = 117) sqrt(15 – r) = sqrt(2r – 15)8)

draw 2 Lewis Structures of SeOF2. one following the octet rule and one not. Use formal charge on both structures to determine which one is more stable Which of the following is the ground state electron configuration of a calcium atom? a. [Ne]3s2 b. [Ne]3s23p6 c. [Ar]4s13d1 d. [Ar]4s2 e. [Ar]3d2 The Correct Answer and

Which of the following statements correctly describes properties associated with the development of skeletal muscle cells? Check all that apply A. Skeletal muscle cell are multi nucleated cells B. Skeletal muscle cells have the capacity for repair due to the actions of myosatellite cells C. Skeletal muscle cells develop via the process of mitosis D.

Fill each blank with sometimes, always, or never to make each statement true. a.) The opposite angle of a parallelogram can _ have different measures. b) The base angles of an isosceles trapezoid are supplementary. c.) Parallelograms are squares. d.) A rhombus is a trapezoid. f.) 1 pair of opposite angles in a kite is