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1. Design an experiment. Use a diagram to outline the design of the experiment in this medical study.
2. Ethics. What are the three first principles of data ethics? Explain briefly what the flu vaccine study must do to apply each of these principles.
Two adjacent sources each emit a frequency of 800 Hz in air where the velocity of sound is 340 m/s. How much farther back would source 1 have to be moved so that an observer in front of the sources hears no sound?
A railroad car of mass 3.3 104 kg moving at 4.50 m/s collides and couples with two coupled railroad cars, What is the speed of the three coupled cars after the collision
A sphere of radius R = 0.325 m and uniform charge density -151 nC/m3 lies at the center of a spherical, find the magnitude of the electric field at the following radial distances from the center of the charge distribution
Assume that the points of inflection of the piecewise-linear transfer characteristic occur at 29° (vs(q) = 0.6V) and 73° (vs(q) = 1.2V). Use the first point of inflection to determine the maximal value Vtri of the triangle wave
The magnetic field of an electromagnetic wave in a vacuum is B_ z = ( 4.0mu T )sin( 1.0×107 x - 2 pi f t) , where x is in m and t is in s. what is the wave's electric field amplitude
an air mattress is 2.3 m long 0.66 m wide and .14 m deep. if the air mattress isteslf has a mass of 0.22 kg what is
If the electric field is zero in some region of space, the electric potential must also be zero in that region. The value of the electric potential can be chosen to be zero at any convenient point. In electrostatics, the surface of a conductor is an ..
Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force exerted on the car
The mechanical advantage of a hydraulic jack is 450. Find the weight of the heaviest automobile that can be lifted by an applied force of 60.0 N
Find the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 33.0 degree below the horizontal
If a star with a radius of 106 km collapses to 10km and 50% of its mass in the process. How much faster will it be spinning
q1. blood is capable of carry excess energy from the interior to the surface of the body where the energy is dispersed
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