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A spherical mirror is polished on both sides. When utilized as a convex mirror, the magnification is +1/4. What is the magnification when utilized as a concave mirror, the object remaining the similar distance from the mirror? Give your answer to three important figures
Two cars traveling in opposite directions collide head on and are brought to rest. estimate the change in entropy of the universe as a result of the collision
consider light that is refracted by a prism shaped like an equilateral triangle. the incident ray is parallel with the
1 salt crystals will form saltwater as the water evaporates. a salt crystals is much more ordered than salt dissolved
A series RLC circuit has R=18kohm, C=14microF and L=0.2H. What is the value of the impedance at this frequency
How is sound produced and how are standing waves set up in the instruments? Key words: incident, reflected, interference, wavelength, string/pipe length
A solid steel rod of length 120-cm and mass 450 grams, is rotated about its center with an angular acceleration 23 rad/s2. What is the moment of inertia of the rod, What is the net torque acting on the rod
A mass of 0.5 kg is suspended from a spring, which stretches by 8 cm. The support from which the spring is suspended is set into sinusoidal motion. At what frequehcy would you expect resonant behavior?
on a part-time job you are asked to bring a cylindrical iron rod of density 7800kgm3 length 89.7cm and diameter 2.35cm
The infamous chicken is dashing toward home plate with a speed of 5.6m/s when he decides to hit the dirt. The chicken slides for 1.0s , just reaching the plate as he stops (safe, of course).
What is the minimal mass of helium (density 0.18) needed to lift a balloon carrying two people in a basket, if the total mass of people, basket, and balloon (but not gas) is 320.
Two parallel plates of area 51 cm.^2 have equal but opposite charges of 4.10E-07 C. Within the dielectric material filling the space among the plates, the electric field is 3.60E+05 V./m. Find the dielectric constant of the material.
A woman of mass m = 50.9 kg sits on the left end of a seesaw-a plank of length L = 3.99 m, Find the normal force exerted by the pivot if the plank has a mass of mpl = 13.4 kg
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