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Testing job applicants. A company used to give IQ tests to all job applicants. This is now illegal because IQ is not related to the performance of workers in all the company's jobs. Does the reason for the policy change involve the reliability, the bias, or the validity of IQ tests as a measure of future job performance? Explain your answer.
A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 29m/s, the block hangs vertically down. But when the van maintainsthis same speed around an unbanked curve (radius = 165 m), the block swings..
A 12- V battery causes a current of 0.40A through a resistor. A) what is its resistance B) how may joules of energy does the battery lose in minutes.
a 0.28- muf capacitor is charged by a 1.2- v battery. after being charged the capacitor is connected to a small
An electron and a proton have charges of an equal magnitude but opposite sign of 1.6 10-19 C. what are the magnitude and direction of the electrostatic force exerted on the electron by the proton
Consider a string with length 36 cm. The two ends are attached to the ceiling, separated by distance 30.0 cm. Determine the tension in the right segment of the string
Consider the l=1 to l=0 transition in the HCl molecule. If the sample contains two isotopes of chlorine (35Cl and 37Cl) the rotational spectral line is split in two. Calculate the energy difference between the photons.
For the third circuit, consisting of a single battery and two light bulbs in parallel, how does the brightness of the bulbs compare to the first circuit, What is the current through each bulb
A Carnot engine operates between reservoirs at 550K and 300K, discarding 1500 J of heat in each cycle. determine the engine's efficiency
A catapult launcher on an aircraft carrier accelerates a jet from rest to 67m/s. what is the power output of the catapult
What energy (in J) is delivered to the tumour per second? Calculate the dose absorbed by the tumour delivered per second (in Gy/s)?
A farsighted person can read printing as close as 25.0 cm when she wears contacts that have a focal length of 44.6 cm. What is the maximum angular magnification that the magnifying glass can provide for her
An infinite cylinder with uniform volume charge density ρ has its axis lying along the z axis. A sphere is carved out of the cylin- der and then filled up with a material with uniform density -ρ/2. Assume that the center of the sphere is located o..
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