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The wire in the drawing carries a current of 9.3 A. Suppose that a second long, straight wire is placed right next to this wire. The current in the second wire is 37 A. Use Ampere's law to find the magnitude of the magnetic field at a distance ofr = 0.94 m from the wires when the currents are (a) in the same direction and (b) in opposite directions.
By calculation, determine the wavelength of three principal visible lines of hydrogen from energy transitions n=3, 4
What is the linear speed of the hoop's center of mass just as the hoop leaves the incline and rolls onto a horizontal surface
A 40.0 cm diameter cylinder of helium gas is 70.0 cm long and at 30.0 ^circC. The pressure gauge reads 140 psi. How many helium atoms are in the cylinder.
Light hits the surface of water at an incident angle of35° with respect to the normal line. What is the angle between the reflected ray and the refracted ray?
An unknown liquid fills a cubical container of side length of 15cm. The mass of the liquid (excluding the container) is 3.11 Kg. What is the absolute pressure of the container
A single convex lens projects a focused image of an object onto a screen. If the lens is 15 cm from the object and and 36 cm from the screen, what is the focal length of the lens
Two charged particles are located on the x axis. The first is a charge +Q at x = -a. The second is an unknown charge located at x = +3a, What are the two possible values of the unknown charge
Three identical charges of 3.0 mC are placed at the vertices of anequilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?
An Italian chef, who is very scientific in her approach to cooking, measures the specific heat of a porcini mushroom by placing it in a calorimeter filled with 0.678 kg of olive oil at 13.2°C. What is the specific heat of the mushroom
Two speakers on stands 10 m apart are aimed directly at each other. They are emitting a pure tone at 440 Hz. Alice stands at a point exactly between the two speakers;
A parallel plate capacitor has a separation between its plates of 1.0 mm. There is a dielectric with a dielectric constant of 2.1 fi ling the gap. what is the area of one of the capacitor plates
cientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 5.0kg projectile from rest to a speed of 4.0 x 103 m/s. The net force accelerating the projectile..
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