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Minimal risk? You are a member of your college's institutional review board. You must decide whether several research proposals qualify for less rigorous review because they involve only minimal risk to subjects. Federal regulations say that "minimal risk" means the risks are no greater than "those ordinarily encountered in daily life or during the performance of routine physical or psychological examinations or tests." That's vague. Which of these do you think qualifies as "minimal risk"?
(a) Draw a drop of blood by pricking a finger in order to measure blood sugar.
(b) Draw blood from the arm for a full set of blood tests.
(c) Insert a tube that remains in the arm so that blood can be drawn regularly
A straight horizontal wire carries a current of 6.50 μA. An electron is moving above the wire the direction parallel to it and in the same direction as the conventional current in the wire.
A particular radioactive source produces 150 mrad of 2 MeV gamma raysper hour at a distance of 1.0 m. How long could a person stand at thisdistance before accumulating an intolerable dose of 1 rem
if 470 J of heat are added to 65 moles of a monatomic gas at constant volume, how much does the temperature of the gas increase
A farsighted man uses eyeglasses with a refractive power of 1.95 diopters. Wearing the glasses 0.02 m from his eyes, What is the correct contact lens prescription, in diopters
A person is sitting at an angle θ off to the side of a diffraction horn that has a width D of 0.069 m. This individual does not hear a sound wave that has a frequency of 8700 Hz. When she is sitting at an angle of Π/2, the frequency that she does ..
A costume jewelry pendant made of cubic zirconia is submerged in oil. A light ray strikes one face of the zirconia crystal at an angle of incidence of 18o. what is the ray angle with respect to the face of the crystal
1.a car uniformly decelerates at a rate of -5.00 ms2. how far does the car travel after 1.50 seconds if it initially
An object attached to a spring has simple harmonic motion with amplitude of 3.00 cm. When the object is 1.73 cm from the equilibrium position, what fraction of its total energy is potential energy?
Orb spiders make silk with a typical diameter of 0.15 .A typical large orb spider has a mass of 0.50. If this spider suspends itself from a single 12-cm-long strand of silk, by how much will the silk stretch
The mean time between collisions in iron is 5.2×10-15s. What electron current is driven through a 1.5-mm-diameter iron wire by a 0.067V/m electric field
the abovegroundswimming pool of h=.95m has an external filter sitting on ground . the filter has an opening 2cm is diameter that connects to the pipe of 1cm diameter. what is the pressiure at the filter openning
A ball is dropped from rest from the top of a 6.35-m-tall building, falls straight downward, collides in-elastically with the ground, How many bounces can the ball make and still reach a windowsill that is 2.26 m above the ground
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