Numerade

Questions asked

BEST MATCH

Write down the integral form solution for the equation y′ + (1 + t2)y = 1 − t

BEST MATCH

What does the 'Petrodollar System' refer to? Group of answer choices A currency system backed by oil The use of oil as direct currency The global trade of oil in any currency The barter of oil for gold

View Answer

BEST MATCH

Determine the molar mass in gmol^(-1) of an elemental gaseous substance that has a density of 3.12gdm^(-3) at STP. identify the substance if its molecules are diatomic.

View Answer

BEST MATCH

4. In a plant, solid particles (i.e. ash) are carried away by the stack gas and causes air pollution. What should be diameter of the stack to prevent pollution if the flow rate of the gas is 10 m³/s? Take the stack gas as air. The density and diameter of the solid particles are 680 kg/m³ and 1.25 mm, respectively.

View Answer

BEST MATCH

A square hoop ABCD is made of fine smooth wire and has side length 2a. The hoop is horizontal and rotating with constant angular speed ω about a vertical axis through A. A small bead which can slide on the wire is initially at rest, relative to the hoop, at the midpoint of the side BC. Choose axes fixed relative to the hoop, and let y be the distance of the bead from the vertex B on the side BC. Write down the position vector of the bead in the rotating frame. Using the standard expression for acceleration in a rotating frame, show that y ̈ − ω^2 y = 0 Hence show that the time which the bead takes to reach a corner of the hoop is ω^−1 cosh^−1 2. Using dimensional analysis, explain why this time is independent of a. Obtain an expression for the magnitude of the force exerted by the hoop on the bead.

View Answer

BEST MATCH

z = 2x + \frac{3}{d^4} Write this expression in java double z = 2*x + 3/Math.pow(4,d); None of the other answers double z = 2*x + 3/Math.pow(d,4); int z = 2*x + 3/Math.pow(d,4); double z = 2*x + 3/d*d*d*d;

View Answer

BEST MATCH

A cross-sectional study of 4,800 participants looked at the association between Normal Course Load (12-15 credit hours (CH)) and Anxiety among upperclassmen college students (Junior & Senior). The study included 1,600 students with a High Course Load. This study also discovered a total of 1,320 cases of Anxiety. Of those with a Normal course load 15% were diagnosed with anxiety like symptoms by a school psychologist. Course Load Yes Anxiety No High (16-19 CH) Normal (12-15 CH) Total Fill in every blank cell in the table. You will report them as \"fill in the blanks\" below based on the labels in the table. Total

View Answer

BEST MATCH

I- The joint density function of Y? and Y? is given by: f(Y?, Y?) = \begin{cases} 30y?y?² & y? - 1 ? y? ? 1 - y?, 0 ? y? ? 1 \\ 0 & elsewhere \end{cases} (a) Find the marginal density of Y?. Name the probability distribution of Y? and find its mean and variance. (b) Find P(Y? > 0|Y? = 0.75) (c) Find E(Y?|Y? = 0.75) and V(Y?|Y? = 0.75).

View Answer

BEST MATCH

4. The gel below, was produced by DNA sequencing. What was the original DNA template strand sequence? [4T] ddCTP ddGTP ddTTP ddATP 5. During an investigation of the promoter region of a gene you apply heat to two sections of DNA that you believe could be a promoter region. One region unwinds at 80 degrees Celsius and the other unwinds around 60 degrees Celsius. Which of the two strands contains the promoter? Explain. [4 T] 6. Use labelled diagrams incorporating the concept of the "Central Dogma of Molecular Genetics" to illustrate how a mutation can lead to disease. [4 C]

View Answer

BEST MATCH

Chemical gradients influence the resting potential of a neuron. An example of this is: A) The high potassium concentration in the ECF causes it to leak out. B) The sodium potassium pump moves potassium to the ECF and sodium to the ICF. C) The high sodium concentration in the ECF causes it to leak in. D) There are more anions and negatively charged proteins inside the cell.

View Answer

blanca c.