Question Explain how to calculate a CBA to justify the HRIS project. Would you use cost reduction or organizational enhancement (or both) as a strategy for justifying the purchase?

Question Help A searchlight is shaped like a paraboloid of revolution. If the light source is located 2 feet from the base along the axis of symmetry and the opening is 10 feet across, how deep should the searchlight be? The searchlight should be feet deep. (Type an exact answer in simplified form.)

What should be the minimum cross-sectional area of each conductor in a two-core cable 100 m long to limit the total voltage drop to 4% of the declared voltage of 250V when the conductors carry 60A ? The resistivity of the conductor is 2·845 µΩ cm. ANS IS [0·34 cm2]

Which of the following is a true statement? Voltage is the energy per unit charge. Voltage is a force. Voltage is the product of current and time. Voltage is the same as power.

Transcribed image text: A solar system is modelled by R3, with a sun at the origin. Let D be R3 with the origin removed. The gravitational force field exerted by the sun on an object of mass 1 at the point (x, y, z) in D is given by F(x, y, z) = 1 (502 + y2 + 2) 0 (a) [1 mark] Show that F is conservative on R3 - (0,0,0). (b) (1 mark] A meteor of mass 1 is travelling in the solar system. At any time time t, the position of the meteor is given by R(t) = (t, t, t2 - 3) Calculate the work done by the sun on the meteor when 0 <t<2. (e) [2 marks] This solar system is covered in dust particles, which causes the same meteor as in (b) to gain mass as it travels through the solar system. If m is the mass of the meteor and s is the distance travelled by the meteor, then the rate at which m changes with respect to s at the point (x,y,z) is given by dm ds Calculate the total change in the mass of the meteor between t = 0 and t = 2.

Gasoline-contaminated groundwater has flowed under a residentialdwelling from a nearby gasoline station. Two meters beneath the 100m2 dirt floor of the residential basement, theconcentration of hydrocarbon vapors in the soil air is 25 ppm on amass/mass basis. Estimate the flux density of gasoline vapor andthe daily rate of vapor transport into the basement by moleculardiffusion. Assume an approximate diffusion coefficient of10-2 cm2/sec for gasoline vapor inthe soil and, the basement is well ventilated, so that the gasolinevapor concentration in the basement is much less than 25 ppm. Airdensity is approximately 1.2 g/1000 cm3 at 1atm pressure and 20˚C.

Need help on this please 2) By direct integration, find the Laplace transforms of the following signals: sin : 1 1 1/e АД 1 TI 1 (a) (b) (c)