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An inferometer consists of 50 parabolic antennas placed 14 m apart. It operates at a wavelength of 21cm. Compute the angular seperation between principle maxima and the angular width of the zero order peak.
on a frozen pond a 10kg sled is given a kick that imparts to it an intial speed of v0 2.0ms. the coefficient of the
A simple magnifying glass can focus sunlight enough to heat up paper or dry grass and start a fire. what is the intensity of the image of the Sun
You are standing at = 9.0 km Lightning bolt 1 at x= 0km and lightning bolt 2 at x = 12.0km. what is the time difference between the two flashes
A block of 4.4 kg is held at the top of a smooth incline. The incline has height of 2.1 m and is at an angle of 19 degrees above the horizontal. How much work was done by friction on the block
Estimate the change in COP of your electric food freezer when it is removed from your kitchen to its new location in your basement, which is 8 C° cooler than your kitchen. (Assume that the temperature in the kitchen is 20°C and that the temperature o..
A certain siren radiates sound uniformly in all directions. At a distance of 17m from the siren, How many watts of power does the siren put out
A proton accelerates from rest in a uniform electric field of650 N/C. At some later time, its speedis 1.3 106 m/s. Find the magnitude of the acceleration of the proton. How long does it take the proton to reach this speed?
A conical pendulum is formed by attaching a 50 g mass to a 2 m string. The mass swings around a horizontal circle of radius 1 m. What is the acceleration of the mass
A prism has a vertex angle of 60° and an index of refraction of 1.52. What is the minimum angle of incidence, measured away from the vertex
A satellite of mass320kg is in a circular orbit around the Earth at an altitude equal to the Earth's mean radius. Calculate the gravitational force acting on it
the motor in a refrigerator has a power output of 200w. if the freezing compartment is at 270k and the outside air is
A double convex thin glass lens has equal radii of curvature. The focal length of the lens is +63.5 cm, find The index of refraction of the glass of the plano-convex lens
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