Numerade

Questions asked

BEST MATCH

If a = 1.0 cm, b = 3.0 cm, and I = 30 A, what is the magnitude of the magnetic field at point P? a. 0.62 mT b. 0.59 mT c. 0.35 mT d. 0.31 mT

View Answer

BEST MATCH

1. A cell has the following conditions: [Na+]o = 145mM, [Na+]I = 10mM, [K+]o = 4mM, [K+]I = 150mM, [Ca++]o = 1.2mM and [Ca++]I = 0.3 mM at body temp 37˚C (problem set 3.1, question 8) a. Calculate ENa, EK, and ECa b. If gK = 100gNa, and gNa = 5gCa, calculate Em at rest c. Calculate the net driving force for INa, IK, and ICa d. Calculate the relative values of INa, IK, and ICa

View Answer

BEST MATCH

Consider the indefinite integral $\int x^3 (7 + 9x^4)^6 dx$. The most appropriate substitution to simplify this integral is $u =$ Then $du =$ $\sum dx$ (fill in the blank with a suitable constant or function of x), and so $x^3 dx = c du$, for the constant $c =$ $\sum$ After making these substitutions we obtain the integral $\int f(u) du$, where $f(u) =$ This last integral, when evaluated, is $\sum$ After substituting back for u we obtain the following final form of the answer: $\int x^3 (7 + 9x^4)^6 dx =$ $\sum$

View Answer

BEST MATCH

Use summation notation to rewrite the given sum in terms of k. (4^(8)+4)+(5^(8)+5)+(6^(8)+6)+(7^(8)+7) Select the correct expression. sum_(k=1)^(infty ) (k^(8)+k) sum_(k=1)^7 (k^(8)+k) sum_(k=4)^7 (k^(8)+k) sum_(k=1)^4 (k^(8)+k) sum_(k=4)^(infty ) (k^(8)+k) Use summation notation to rewrite the given sum in terms of k. (48 + 4) + (58 + 5) + (68 + 6) + (78 +7) Select the correct expression. 8 Z (k8+k) k=1 C Z (k+k) k=1 7 Z(k8+k) k=4 4 Z (k8+k) k=1 8 Z (k8+k) k=4

View Answer

BEST MATCH

Fig 1. Biotransformation of HMW-PAHs by the microbial communities derived from samples TPW and 2m. Enrichments were grown on Pyr (A), BaP (B), and BbF (C). Error bars represent the standard error of the mean (n = 3). *, significant degradation compared to abiotic control (Mann-Whitney U test, P < 0.05). A Pyrene Percentage pyrene remaining (%) 100 80 60 -Abiotic * 40 -TPW 20 -2m 0 0 5 10 15 20 25 30 35 Time (Days) (image) See the figure. It is Figure 1A from the biofilm paper. What conclusion(s) can you draw from this figure? Choose all that apply and only those that apply. a. There was an increase in pyrene in the 2m sample. b. The "oil-eating" microbes removed approximately half of the pyrene from the TPW sample. c. In the abiotic sample, there was a 50% decrease in pyrene. d. In the 2m sample, there was more pyrene remaining after 11 days than there was after 33 days. e. There was a decrease in pyrene in the TPW sample. f. In the abiotic sample, there was almost no pyrene decrease because there were no living organisms in the sample to remove the pyrene.

View Answer

BEST MATCH

The chips shown are placed in a bag and drawn at random, one by one, without replacement. What is the probability that the first two chips drawn are both blue? The probability is (Simplify your answer.)

View Answer

BEST MATCH

Find the inverse Laplace transform of \begin{equation} F(s) = \frac{e^{-6s}}{s^2 + 1s - 12} \end{equation} \begin{equation} f(t) = (t - 6) \left(\frac{1}{7}e^{3(t-6)} - \frac{1}{7}e^{-4(t-6)}\right) \text{ (Use step(t-a) for } u_a(t) ) \end{equation}

View Answer

BEST MATCH

27.2012 1. (6 x 6 points each = 36 points) Products of Reactions. • First draw any organic starting material that is given as a name. • Then, draw the major organic products of the reaction (i.e., those formed as more than 10% of the product). Include any important regiochemistry and stereochemistry. 3-bromo-3-methylpentane $CH_3CH_2OH$ Br 3,3-dimethylhept-1-ene HCI $CH_3CH_2SH$ Br (S)-3-bromohexane NaOEt EtOH Heat 1-iodopentane KCN DMSO RT (S)-3-chloro-6-methylheptane NaOH DMSO + NaOH HClr inversion of Stereo

View Answer

BEST MATCH

Discuss the history of FDI since world war 2. What has made FDI possible? Which countries, in general, have benefitted from this growth and way.

View Answer

BEST MATCH

Which of the components is a component of optical instruments? a. Filter b. UV-radiation c. All of these d. Photoanode

View Answer

anthony b.