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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.)
A lamp (R=150), an electric heater (R=23), and a fan (R=50) are connected in parallel across a123V line. calculate the power is expended in the heater
Two blocks are connected by a light cord. One block, of mass 4kg, sits on a horizontal table with static and kinetic coefficients of friction of 0.6 and 0.4, respectively, whereas the other block, of 2 kg mass, hangs over a frictionless light pull..
A gnat takes off from one end of a pencil and flies around irregularly for 36.1 seconds before landing on the other end of the same pencil. If the gnat flew a total distance of 5.15 meters, and the pencil is 0.0713 m long, discover the gnat\'s averag..
a bullet of mass m1 is fired horizontally with a speed v into the bob of a ballistic pendulum of mass m2 find the maximum hight h attained by the bob
a singly ionized nickel atom has an overall charge of 1e where e 1.602 x 10-19 c and a mass m 9.80 x 10-26 kg. it
A convex lens of 10 cm focal length is placed in contact with a convex lens of 15 cm focal length. What is the focal length of the combination
A molecule of HCl (dipole moment p = 3.60×10-30 Cm) and moment of inertia of 2.70×10-47 kgm2) is suddenly subjected to an electric field E at right angles to the direction of the molecule's dipole moment. What is the magnitude of the electric field
A 5 kg mass attached to a horizontal spring is pulled from its equilibrium position by 3 m and let go. what is the maximum velocity of the mass
A 2250 kilogram car traveling at 10.0 m/s collides with a car of mass 2750 kilogram that is initially at rest at a stoplight. Obtain coefficient of kinetic friction between cars and road
A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on the ground as a function of time. What impulse did the athlete receive from the platform
You are to design a tungsten filament light bulb that has a power of 60W when it is connected to 120V at which condition its temperature is expected to be 1020C. You have a tungsten wire of diameter 0.05mm. Calculate the length of filament that yo..
A box of mass 5 Kg is connected by a massless rope to a 10.0 Kg. A force of 60.0 N is applied to the 5 Kg. What is the tension in the rope connecting the 2 masses
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