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Part of a long, straight wire is bent into a circular loop of radius R such that the current flows from the left, then around the loop, and then out to the right (see figure). Find the magnitude of the magnetic field at the center of the loop. (use principle of superposition).
Why were the relative intensities of an element's spectral lines NOT all the same? The next corresponding hydrogen line in the Balmer series shouldbe due to the n=7 to n=2 transition. Calculate the wavelength of this line and offer an explanation ..
Light shines through a single slit whose width is 7.40 10-4 m. A diffraction pattern is formed on a flat screen located 3.2 m away. The distance between the middle of the central bright fringe and the first dark fringe is 3.25 mm. What is the wavelen..
The pressure in each of your car tires is 1.90 105 Pa. The mass of your car is 1500 kg. what is the contact area of each tire with the road
Sam heaves a shot with weight 16-lb straight upward, giving it a constant upward acceleration from rest of 45.5m/s2 for a height 63.0cm, What is the speed of the shot when he releases it
once upon a time, a stunt man would jump across the grand canyon a motorcycle. What minimum initial speed would be required to make across the canyon
a weight of 10 n is dropped from a height of 1.2 m onto a spring cushion pad. if the spring has an elastic force
In the vertical case the maximum tension in the string is 18.0% larger than the tension that exists when the circle is horizontal. Identify the speed of the stone.
What is the minimum coefficient of static friction between the road and the tires on a car for the car to go around a flat curve at 45.0 mph
An aircraft starts at rest and is accelerated at 7.5 m/s2 for 11.9 sec, at which time the aircraft launches. Find the distance traveled from starting point to launch point
Oxygen has a molar mass of 32.0g/mol. What is the root-mean-square speed of an oxygen molecule at a temperature of 298K
What value does this give for the speed of sound in air. What is the speed of the ball at that point.
A canoe has a velocity of 0.54 m/s southeast relative to the earth. The canoe is on a river that is flowing 0.58 m/s east relative to the earth. Find the direction of the velocity of the canoe relative to the river
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