Mindy, a medical device engineer, is designing an apparatus to monitor the breathing of a patient. The apparatus consists of a stretchable loop of conductive material wrapped in a small band around the patient's chest. A constant uniform external magnetic field is produced by a nearby solenoid. As the patient inhales, his chest expands, stretching the chest band. The resulting increase in the area of the loop causes an emf to be induced in the loop. By measuring the induced emf, a device user can estimate the patient's breathing rate. Mindy needs the apparatus to be able to detect a change in area as small as 5.50 cm² occuring over a time period of 1.50 s. If the minimum emf that can be reliably detected is 3.00 × 10-4 V, what is the magnitude Bmin of the minimum external magnetic field that would be needed from Bmin = the solenoid? T Due to practical constraints, the largest magnetic field that the solenoid can actually produce is 3.50 × 10-3 T. Mindy decides to compensate by using multiple loops of the conductive material in series. What is the minimum number Nmin of wire loops that will allow the chest band to function as desired? Enter the smallest integer value. Nmin = loops

Mindy, a medical device engineer, is designing an apparatus to monitor the breathing of a patient. The apparatus consists of a stretchable loop of conductive material wrapped in a small band around the patient's chest. A constant uniform external magnetic field is produced by a nearby solenoid. As the patient inhales, his chest expands, stretching the chest band. The resulting increase in the area of the loop causes an emf to be induced in the loop. By measuring the induced emf, a device user can estimate the patient's breathing rate. Mindy needs the apparatus to be able to detect a change in area as small as 5.50 cm² occuring over a time period of 1.50 s. If the minimum emf that can be reliably detected is 3.00 × 10-4 V, what is the magnitude Bmin of the minimum external magnetic field that would be needed from Bmin = the solenoid? T Due to practical constraints, the largest magnetic field that the solenoid can actually produce is 3.50 × 10-3 T. Mindy decides to compensate by using multiple loops of the conductive material in series. What is the minimum number Nmin of wire loops that will allow the chest band to function as desired? Enter the smallest integer value. Nmin = loops

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A coil has an area of 100 cm? with 193 turns connected across a 5.00 N resistor to form a closed circuit as in the figure. Initially, a 2.4 T uniform magnetic field points upward through the plane of the coil. The direction of the field then reverses so that the final magnetic field has a magnitude of 2.4 T and points downward through the coil. If the time interval required for the field to reverse directions is 0.100 s, what is the average current (in units of A) in the coil during that time? В R Select one: O A. 20.84 В. 25.48 OC. 9.26 O D. 4.63 O E. 18.53
A generator connected to the wheel or hub of a bicycle can be used to power lights or small electronic devices. A typical bicycle generator supplies 6.25 V when the wheels rotate at w = 19.0 rad/s. HINT (a) If the generator's magnetic field has magnitude B = 0.800 T with N = 105 turns, find the loop area A (in m²). m² (b) Find the time interval (in s) between the maximum emf of +6.25 V and the minimum emf of -6.25 V. S
A circular copper loop is placed perpendicular to a uniform magnetic field of 0.05 T. Due to external forces, the area of the loop decreases at a rate of 1.26 ×10–3 m2/s. Determine the induced emf in the loop.
A coil has an area of 100 cm2 with 282 turns connected across a 5.00 Q resistor to form a closed circuit as in the figure. Initially, a 1.4 T uniform magnetic field points upward through the plane of the coil. The direction of the field then reverses so that the final magnetic field has a magnitude of 1.4T and points downward through the coil. If the time interval required for the field to reverse directions is 0.100 s, what is the average current (in units of A) in the coil during that time? В R Select one: A. 21.71 В. 7.90 OC. 17.77 D. 15.79 E. 3.95
Mindy, a medical device engineer, is designing an apparatus to monitor the breathing of a patient. The apparatus consists of a stretchable loop of conductive material wrapped in a small band around the patient's chest. A constant uniform external magnetic field is produced by a nearby solenoid. As the patient inhales, his chest expands, stretching the chest band. The resulting increase in the area of the loop causes an emf to be induced in the loop. By measuring the induced emf, a device user can estimate the patient's breathing rate. Mindy needs the apparatus to be able to detect a change in area as small as 5.50 cm? occuring over a time period of 1.50 s. If the minimum emf that can be reliably detected is 2.00 x 10-4 V, what is the magnitude of the minimum external magnetic field that would be needed from the solenoid? magnitude of minimum external magnetic field: T
A power line carries a current I = 100 sin(380t), where I is in amps and t is in seconds. A clever engineering student wants to steal power by inducing emf in a rectangular loop of copper wire as shown below. If the student wants to induce a maximum emf in the loop equal to 1.7 V, what should be the length L of the loop? Assume that the magnetic field produced by the power line is uniform inside of the rectangular loo and equal to the magnetic field at the center of the loop. 5 mi To equipment I 0.5 m
Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. A small coil is placed on the scalp, and a brief burst of current in the coil produces a rapidly changing magnetic field inside the brain. The induced emf can be sufficient to stimulate neuronal activity. One such device generates a magnetic field within the brain that rises from zero to 1.1 T in 100 ms. Determine the magnitude of the induced emf within a circle of tissue of radius 1.6 mm and that is perpendicular to the direction of the field. e = mV
Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. A small coil is placed on the scalp, and a brief burst of current in the coil produces a rapidly changing magnetic field inside the brain. The induced emf can be sufficient to stimulate neuronal activity. One such device generates a magnetic field within the brain that rises from zero to 1.5 T in 120 ms. Determine the induced emf within a circle of tissue of radius 1.6 mm and that is perpendicular to the direction of the field.
A long solenoid of radius r = 2.00 cm is wound with 3.50 × 103 turns/m and carries a current that changes at the rate of 28.5 A/s as in Figure P20.60. What is the magnitude of the emf induced in the square conducting loop surrounding the center of the solenoid?
A coil has an area of 100 cm2 with 297 turns connected across a 5.00 Q resistor to form a closed circuit as in the figure. Initially, a 1.8 T uniform magnetic field points upward through the plane of the coil. The direction of the field then reverses so that the final magnetic field has a magnitude of 1.8 T and points downward through the coil. If the time interval required for the field to reverse directions is 0.100 s, what is the average current (in units of A) in the coil during that time? В R Select one: А. 24.06 B. 5.35 C. 21.38 D. 29.40 E. 10.69
Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. A small coil is placed on the scalp, and a brief burst of current in the coil produces a rapidly changing magnetic field inside the brain. The induced emf can be sufficient to stimulate neuronal activity. One such device generates a magnetic field within the brain that rises from zero to 1.6 T in 100 ms. Determine the magnitude of the induced emf within a circle of tissue of radius 2.0 mm and that is perpendicular to the direction of the field. = mV
please double check and answer it correctly. i don't want to waste money.