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Post-Impressionist Georges Seurat is famous for a painting technique known as pointillism. His paintings are made up of different-colored dots, and each dot is roughly 2 mm in diameter. When viewed from far enough away, the dots blend together and only large-scale images are seen. Assuming that the human pupil is about 2.6 mm in diameter, determine an approximate minimum distance you need to stand from one of Seurat's paintings to see the dots blended together. (Assume two dots touch, such that their center-to-center distance is equal to one diameter. Also assume light with a wavelength of 647 nm.)
Two long parallel wires carry currents of 2.83 A and 5.41 A. Find the separation distance of the wires expressed in millimeters
What is the density of Neon gas at standard temperature and pressure? The atomic mass of Neon is 20.18 atomic mass unit
high voltage power transmission lines are made out of aluminum with a crosssectional area of about 4.4 x 10-4m2. these
A 45.0-kg girl is standing on a 133-kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. What is her velocity relative to the surface of ice
an electric dipole consists of charges 2e and -2e separated by 1.0 nm. it is in an electric field of strength 4.0 x 106
Two very small plastic balls of equal mass are released from rest. One of them carries +10 µC of excess charge and the other one carries +1µC of charge. No other charges or fields are present. Which of the following statements are true about them as ..
A crate of potatoes of mass 8.0 kg is on a ramp with angle of incline 30° to the horizontal. The coefficients of friction are μs = 0.72 and μk = 0.43. Find the frictional force (magnitude and direction) on the crate if the crate is sliding up t..
A hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. find the buoyant force exerted by the water on the sphere
q1. the wire is made up of atoms with valence 2 and molecular mass 80 gmole where u 1.5605 times 10-27 kg is the mass
A 0.4-kg object is traveling to the right (in the positive direction) with a speed of 2 m/s. obtain the magnitude of the impulse (in N-s) acting on the object
A player bounces a 0.45 kg soccer ball off her head, changing the velocity of the ball from vector v i = (8.6 m/s)x + (-2.1 m/s)y to vector v f =(5.8 m/s)x + (3.4 m/s)y hat. What is the magnitude of the impulse delivered to the ball
An air-track glider attached to a spring oscillates with a periodof 1.17 s. What is the phase constant
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