How many turns must a charged coil have
Question: A closely wound coil has a radius of 6.30 cm and carries a current of 1.70 A. How many turns must it have if, at a point on the coil axis 6.30 cm from the center of the coil, the magnetic field is 7.00 10-4 T?
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The speed of sound does not depend on the loudness or the frequency of sound. The speed of sound in dry air 0 degree celsius is 330 m/s. Explain how temperature and humidity affect the speed of sound.
At the time of his death in January 2013, Dick owned real estate in the name of Dick and his sister Ellen, as joint tenants with right of survivorship. Dick and Ellen purchased the property in 2010.
Your eye (diameter 2.5 cm) is able to focus the image of a tree on your retina. The tree is 24 m tall and 85 m away. What is the size of the image of the tree on your retina? (Be careful about the sign of the image size.) Show your work.
A parallel plate capacitor has 2.5cm^2 plates that are separated by 2mm in a vacuum. If a potential difference of 100V is connected to the capcitor, calculate its capacitance and charge on each plate?
A closely wound coil has a radius of 6.30 cm and carries a current of 1.70 A. How many turns must it have if, at a point on the coil axis 6.30 cm from the center of the coil, the magnetic field is 7.00 10-4 T?
The management of ABC Co. is considering the purchase of $50,000 machine that would reduce operating costs by $10,000 per year. At the end of the machine's 10 year useful life, it would have no scrap value. The tax rate is 30%.
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If an electron of mass 9.1 E-31 kg is released from rest from the negatively charged plate and strikes the positive plate with a speed of 4xE6m/s. Calculate the potential difference between the two plates.
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