In the rainy season, the Amazon flows fast and runs deep. In one location, the river is 25 m deep and moves at a speed of 3.6 m/s toward the east. The earth's 50 μT magnetic field is parallel to the ground and directed northward. If the bottom of the river is at 0 V, what is the potential (magnitude and sign) at the surface? Express your answer with the appropriate units. V surface = μA Value Units ?
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- A uniform magnetic field is perpendicular to the plane of a circular loop of diameter 11 cm formed from wire of diameter 2.1 mm and resistivity of 1.57 × 1082-m. At what rate must the magnitude of the magnetic field change to induce a 14 A current in the loop? Number i UnitsIn a physics laboratory experiment, a coil with 250 turns enclosing an area of 10.5 cm^3 is rotated during the time interval 3.10 x 10^-2 s from a position in which it’s plane is perpendicular to Earth’s magnetic field to one in which it’s plane is parallel to the field. The magnitude of Earth’s magnetic field at the lab location is 7.00 x 10^-5 T. Part A: What is the magnitude of the magnetic flux through the coil before it is rotated? Part B: What is the magnitude of the magnetic flux through the coil after it is rotated? Part C: What is the magnitude of the average emf induced in the coil?The uniform 33.0 mT magnetic field in the figure points in the positive z-direction. An electron enters the region of magnetic field with a speed of 5.00 ×106 m/s and at an angle of 30° above the xy-plane. (Figure 1) Figure X B 000 30° y 1 of 1 ▼ Part A Find the radius r of the electron's spiral trajectory. Express your answer with the appropriate units. Value Submit Part B μA Submit Value Provide Feedback Request Answer Find the pitch p of the electron's spiral trajectory. Express your answer with the appropriate units. HÅ Units Units Request Answer WWW ? ?
- q16In the figure, a conducting rod of length L= 25.0 cm moves in a magnetic field B → of magnitude 0.490 T directed into the plane of the figure. The rod moves with speed v = 4.00 m/s in the direction shown. When the charges in the rod are in equilibrium, what is the magnitude E of the electric field within the rod? What is the magnitude Vba of the potential difference between the ends of the rod? What is the magnitude E of the motional emf induced in the rod?Problem A. A sketch below shows a mass spectrometer, that consists of a velocity selector and a deflection chamber. The magnitude of a magnetic field in both the velocity selector and the deflection chamber is 0.030 T. A proton that goes through this setup will have the radius of its trajectory equal to 0.150 m. Find the electric field strength inside the velocity selector.
- The sketches show possible paths of the charge after it enters a region containing a uniform magnetic field pointing into screen. Before entering the field, the charge is moving with initial speed of 15 m/s. Which path closely resembles the actual path of the charge in the field? A В v = = 15 m/s v = 15 m/§ D v = 15 m/s v = 15 m/s. A X X X X B.A square loop of wire with sides of 20.0cm is half in and half out of a uniform magnetic field which points out of the page as shown. The loop is moving with a speed of 3.00m/s and the strength of the magnetic field is 0.100Tesla. The total resistance of the loop is 4.00Ω. Find the magnitude and directionof the current if the loop is moving in the following directions. a.in the +x direction b.in the -x direction c.in the +y direction d.in the -y directionA 13-cm length of wire is held along an east-west direction and moved horizontally to the north with a speed of 2.2 m/s in a region where the magnetic field of the earth is 55 micro-T directed 28° below the horizontal. What is the magnitude of the potential difference between the ends of the wire? Write your answer in micro-volts.