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A coil of radius 75 mm has 250 turns and carries a current of 2.2 A. Find the magnetic field at the centre of the coil and at a point along the axis 150 mm along the coil. How far along the axis must you go to find the magnetic field has dropped to half its value at the centre of the coil?
Find the fundamental frequency and second harmonic if the tension in the wire is increased to 112 N. (Assume the wire doesn't stretch or break.
In heavy rush-hour traffic you drive in a straight line at 12 m/s for 1.5 minutes, then you have to stop for 3.5 minutes, and finally you drive at 15 m/s for another 2.5 minutes. compute the average velocity between t=0 and t=7.5 minutes.
Assume that plane continues to fly with the similar velocity
You have a 1.93-m-long stretched string with a mass of 19.5 g. When you oscillate the string at 440 Hz, Calculate the tension in the string
A circular disk 0.3 in diameter, pivoted about a horizontal axis through its center , has a cord wrapped around its rim. what is the weight of the rod
Let the angle of incidence be 70° and the transmitted region be diamond with n2 = 2.42
A glass is half-full of water, with a layer of oil (n = 1.50) floating on top. Determine the critical angle for the oil-water interface
A Young's double-slit interference experiment gives bright fringes separated by 2.5 cm on a screen when the experiment is performed in air. What is the new spacing between bright fringes
A stone is thrown vertically upward at a speed of 16 m/s at time t = 0. At what time are the two stones at the same height
A child is riding a merry-go-round, which has an instantaneous angular speed of 1.25 rad/s and an angular acceleration of 0.745 rad/s2. What angle does the acceleration of the child make with the tangential direction
In the Millikan oil-drop experiment illustrated in the figure below, an atomizer is used to introduce many tiny droplets of oil between two oppositely charged parallel metal plates, Estimate the radius of an oil drop of density 854 kg/m3 for which it..
Planet-X has a mass of 3.79×1024 kg and a radius of 5640 km. What is the First Cosmic Speed i.e. the speed of a satellite on a low lying circular orbit around this planet, what is the radius of the synchronous orbit of a satellite
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