Numerade

Questions asked

BEST MATCH

Select all the true statements about activation energies. The activation energy is independent of the overall free energy change of the reaction. The activation energy is the energy difference between the ground states of the reactant and the product. The lower the activation energy, the higher the reaction rate. Exergonic reactions have negative activation energies. The activation energy is increased by adding a catalyst. In an endergonic reaction the activation energy in the forward direction is larger than the activation energy in the reverse direction. The larger the activation energy, the more exergonic the reaction. The activation energy is the difference between a ground state and the transition state free energies.

View Answer

BEST MATCH

The Dalai Lama, as expressed in his article, believes that the strongest reason for being religious is that it can increase one's life span.

View Answer

BEST MATCH

29. If a plant is infected with Rhizobium, what is the probable effect on the plant? A) It gets chlorosis.B) It dies.C) It is supplied with phosphate from the soil.D) It probably will grow fasterE) It becomes flaccid due to the loss of water from the roots

View Answer

BEST MATCH

Question 5 Not yet answered Marked out of 1.00 Choose the correct answer. Due to the big destruction, there is no food, water, electricity or ______ in Gaza. a. traffic congestion b. public transport c. lounges d. outskirts

View Answer

BEST MATCH

(b) Convert the polar equation = 2 1 - cose to the rectangular equation.

View Answer

BEST MATCH

Question 11 Consider the following bivariate data. X 46 44 52 53 39 48 53 51 49 47 Y 60 60 74 77 51 69 70 76 71 67 Use the regression line to estimate the value of y when x = 50 and comment on the reliability of this estimate. 1 y ? 39.3, the correlation is strong and this is an interpolation, so the estimate is reliable. 2 y ? 70.6, but the correlation is weak, so the estimate is not reliable. 3 y ? 70.6, the correlation is strong and this is an interpolation, so the estimate is reliable. 4 y ? 39.3, but this is an extrapolation, so the estimate is not reliable.

View Answer

BEST MATCH

Evaluate the integral $\int_0^6 \int_y^{\sqrt{72-y^2}} (6x + 6y) \, dx \, dy$

View Answer

BEST MATCH

What is the work (kJ) required to compress 1,049 L of an ideal gas to 584 L at a constant pressure of 127 kPa in a closed system? Write your final answer to one decimal place. Ignore the negative sign.

View Answer

BEST MATCH

On May 1, 2014, Ludwig Inc. purchased new trucks for $214,000. The trucks were expected to last ten years and have a residual value of $10,000. Calculate depreciation expense for 2014 and 2015 to the nearest month using the straight-line method, and the double-declining-balance method. Ludwig Inc. has a December 31 year-end. Round final calculations to the nearest dollar. For simplicity, assume the truck is depreciated as an individual item and will not be broken down into its parts and depreciated. Year Straight-Line Double-Declining-Balance 2014 2015

View Answer

BEST MATCH

5 Bandpass sampling Let x(t) be a signal whose Fourier transform is nonzero only on 41 Hz ? |f| ? 60 Hz. The 2fmaz rule for low-pass sampling would require a sampling rate greater than 120 samples per second. (a) What is the smallest allowable sampling rate, in samples per second, if bandpass sampling is used? (Hint: The ceiling function, \lceil x \rceil, is the smallest integer not less than x.) (b) Define the cutoff frequencies of a suitable anti-aliasing bandpass filter to remove noise and interference prior to sampling.

View Answer

marcos b.