Numerade

Questions asked

BEST MATCH

Costs that a manager can determine or influence are: Multiple Choice Direct costs. Joint costs. Indirect costs. Controllable costs. Uncontrollable costs.

View Answer

BEST MATCH

Multiple Choice 1 point In relation to Twiss' definition of religion, what is contained in a worldview? A worldly view of the world Overall view of reality, origin of the world, human destiny, suffering, evil, proper living One's subjective view of how things are. The light side, dark side, muggles, he who shall not be named, Walter White, and Jesse Pinkman

View Answer

BEST MATCH

Fluffy is a sheep that has black wool. Her mother and father both have white wool. Fluffy's offspring also have black wool. What might have caused Fluffy to have black wool instead of white wool? a. A random mutation occurred in Fluffy's skin cells b. A random mutation Fluffy inherited from her father c. A random mutation in Fluffy's mother's skin cells d. Both A and B could cause Fluffy's black wool e. None of the above could cause Fluffy's black wool Explanation

View Answer

BEST MATCH

The boiling point of a 2% (w/w) aqueous solution of a non-volatile, non-electrolyte solute is 0.102 oC higher than pure water. Calculate the molecular mass of the solute knowing that its Kb is 0.52 K.Kg mol-1.

View Answer

BEST MATCH

Assume a country's banking system has limited reserves. In the short run, which of the following would occur to the price of previously issued bonds and interest rates if a central bank bought bonds through open-market operations?

View Answer

BEST MATCH

Back on planet Earth, elements have different isotopic distributions. The atom Silver (Ag) has two common isotopes. $^{107}Ag$ has an isotopic mass of 106.905093 while $^{109}Ag$ has an isotopic mass of 108.904756. Based on the atomic weight of Silver (107.8682), determine the percentage of each isotope on Earth.

View Answer

BEST MATCH

2. An electrical engineer has to choose one brand of light bulbs among four available brands. The following information are available; Brand Cost lifetime A $7 2 years B $9 3 years C $13 4 years D $ 17 5 years Which brand should the engineer select if the MARR is 9% a year?

View Answer

BEST MATCH

Texts: Three resistors connected in parallel have individual values of 4.0, 6.0, and 10.0 Ω, respectively. If this combination is connected in series with a 12 V battery and a 2.02 Ω resistor, what is the current in the 10.02 Ω resistor? Options: a. 11 A b. 0.59 A c. 1.0 A d. 6 A

View Answer

BEST MATCH

Q. The local Nusselt number for a laminar vertical flat plate boundary layer with a uniform wall temperature is given by: (for laminar flow) Nu = 0.332 * (Pr^(1/3)) * (Ra^(1/2)) where Pr is the Prandt number, Ra is the Raleigh number given by Ra = (y * (Tw - T)) / (v * e) where y is the distance from the leading edge, Tw is the wall temperature, T is the free stream temperature, v is the kinematic viscosity, e is the thermal diffusivity, k is the thermal diffusivity, C is the specific heat, and h is the local heat transfer coefficient. Complete the following: a) Show that the Nusselt number based on the mean heat transfer coefficient over length L is given by Nu = (hm * L) / k = 0.677 * (Ra * Pr)^(1/2) + 0.952 b) The coefficient of volumetric expansion, Î±, is defined as Î± = (1 / V) * (dV / dt) where V is the specific volume. Show that the volumetric expansion for an ideal gas is given by Î± = (1 / T) * (dT / dt) c) A vertical flat plate has a height of 0.5m and a width of 0.71m and reaches a uniform temperature of 30Â°C. If the room temperature is 18Â°C, show that the correlation given in part (a) can be used to calculate the heat transfer rate from the plate to the room. The critical Raleigh number for laminar to turbulent flow transition is given by Ra_crit = 10. d) Estimate the convection heat transfer rate from the flat plate to the room. e) What would the heat transfer rate be if the plate is kept horizontal with the hot surface facing up? Identify whether the flow is laminar or turbulent. The relevant correlations are given by Nu = 0.54 * Ra^(1/4) for 10 < Ra < Ra_crit Nu = 2 * 10^(1/4) for Ra > Ra_crit (turbulent flow) f) Explain why the flow will always be laminar if the plate is kept horizontal with the hot surface facing downwards.

View Answer

BEST MATCH

Problem 2. In the figure below, cable BC exerts a force of F = 28 N on the top of the flagpole. Determine the projection of this force along the z axis of the pole.

View Answer

allison m.