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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?
a tungsten target is struck by electrons that have been accelerated from rest through a 29.9-kv potential difference.
Find the frequency in terahertz of visible light with a wavelength of 485 nm in vacuum. What is the wavelength in centimeters of electromagnetic microwave radiation whose frequency is 7.61 GHz?
A wooden raft has a mass of 45 kg. When empty it floats in water (density 1000 kg/m3) with 68% of its volume submerged. What mass of sand could be put on the raft without it sinking.
A solid, horizontal cylinder of mass 10.5 kg and radius 1.14 m rotates with an angular speed of 7.23 rad/s about a fixed vertical axis through its center. Determine the final angular speed of the system
A sheet of an unknown material that is 1.223 +/-.003 micrometers thick is suspended in air. What is the index of refraction of the material
compute the distance from the central maximum to the first bright region on either side of the central maximum.
In 1851 Jean Bernard Leon Foucault demonstrated the rotation of the Earth using a pendulum 11.0 m long, What was the period of oscillation of the pendulum
An ideal gas is compressed at constant pressure to one-half its initial volume. find the initial volume of the gas
q1. a typical major league fastball is thrown at about 99 mph and with a spin rate of 103 rpm. if the distance between
7.85 g of nitrogen gas at an initial pressure of 3.87 atm and at 16°C undergo an isobaric expansion until the volume has doubled. What is the gas volume after the expansion
An object is placed 13.1 cm to the left of a diverging lens of focal length -6.04 cm. Find the distance d that places the final image at infinity
A diffraction grating has a spacing of 350 lines per mm and sits L = 47.7 cm from a screen. what is the wavelength of the laser
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