question archive What is the direction of the magnetic field that produces the magnetic force on a negative charge as shown below, assuming B is perpendicular to v? to the left O out of the page O into the page O to the right Calculate the Hall voltage induced on a patient's heart while being scanned by an MRI unit
What is the direction of the magnetic field that produces the magnetic force on a negative charge as shown below, assuming B is perpendicular to v? to the left O out of the page O into the page O to the right Calculate the Hall voltage induced on a patient's heart while being scanned by an MRI unit
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What is the direction of the magnetic field that produces the magnetic force on a negative charge as shown below, assuming B is perpendicular to v? to the left O out of the page O into the page O to the right
Calculate the Hall voltage induced on a patient's heart while being scanned by an MRI unit. Approximate the conducting path on the heart wall by a wire 7.30 cm long that moves at 10.0 cm/s perpendicular to a 1.30 T magnetic field. O 9.99 mV O 9.49 mV O 9.94 mV O 9.44 mV
At a particular instant, a proton is traveling west to east with a kinetic energy of 14 keV. Earth's magnetic ?eld has a horizontal component of 5.4 X 10'5 T north and a vertical component of 1.6 X 10'5 T down. What is the path of the proton? a circle in the north—up plane a circle in the east—up plane a circle in the plane perpendicular to the Earth's magnetic ?eld a circle in the east—north plane
At a particular instant, a proton is traveling west to east with a kinetic energy of 15 keV. Earth's magnetic ?eld has a horizontal component of 4.2 X 10—5 T north and a vertical component of 2.1 X 10'5 T down. What is the radius of curvature of the path (in m)? O 403 m 0 304 m O 377 m 0 337 m
The mass and charge of a water droplet are 2.0 X 10'4 g and 1.6 X 10'8 C, respectively. If the droplet is given an initial horizontal velocity of 3.0 X 1051' m/s. Assume the magnetic ?eld is perpendicular to the droplet's initial velocity. Further, assume that the droplet's initial velocity is to the right, the +y—axis is up along the page, and the +z-axis is out of the page. Do not ignore gravity, which acts in the —y—direction. Why must gravity be considered here? O The magnetic force must be twice the magnitude of the gravitational force to keep the droplet's direction from changing. m The magnetic force must be equal to the magnitude of the gravitational force to keep the droplet's direction from changing. ("I The magnetic force must be half the magnitude of the gravitational force to keep the droplet's direction from changing. O The magnetic force must be four times the magnitude of the gravitational force to keep the droplet's direction from changing.
An electron of kinetic energy 2,300 eV passes between parallel plates that are 1.5 cm apart and kept at a potential difference of 220 V. What is the strength of the uniform magnetic field B(in mT) that will allow the electron to travel undeflected through the plates? Assume the electron's direction of travel is parallel to the plates and E and B are perpendicular. 0.615 mT O 1.03 mT 1.30 mT O 0.516 mT
A circular coil of wire of radius 5.6 cm has 32 turns and carries a current of 2.1 A. The coil lies in a magnetic field of magnitude 0.50 T that is directed parallel to the plane of the coil. a) What is the magnetic dipole moment of the coil (in A . m2)? b) What is the torque on the coil (in N . m)? O 0.331 A . m2; 0.662 N . m O 0.482 A . m2; 0.241 N . m O 0.241 A . m2; 0.482 N . m 0.662 A . m2; 0.331 N . m
