Essential University Physics: Volume 2 (3rd Edition)
3rd Edition
ISBN: 9780321976420
Author: Richard Wolfson
Publisher: PEARSON
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Chapter 27, Problem 79P
One way to measure blood flow when blood vessels are exposed during surgery is to use an electromagnetic flowmeter. This device surrounds the blood vessel with an
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On December 27, 2004, astronomers observed the brightest flash of light ever recorded from
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A cyclotron is used to produce a beam of high-energy deuterons that then collide with a target to produce radioactive isotopes for a medical procedure. Deuterons are nuclei of deuterium, an isotope of hydrogen, consisting of one neutron and one proton, with total mass 3.34 x 10-27 kg. The deuterons exit the cyclotron with a kinetic energy of 5.00 MeV.a. What is the speed of the deuterons when they exit?b. If the magnetic field inside the cyclotron is 1.25 T, what is the diameter of the deuterons’ largest orbit, just before they exit?c. If the beam current is 400 μA, how many deuterons strike the target each second?
Chapter 27 Solutions
Essential University Physics: Volume 2 (3rd Edition)
Ch. 27.3 - You push a bar magnet toward a loop, with the...Ch. 27.3 - Prob. 27.2GICh. 27.3 - A copper penny falls on a path that takes it...Ch. 27.3 - Prob. 27.5GICh. 27.5 - If you keep the current in a solenoid constant...Ch. 27.6 - Prob. 27.8GICh. 27 - In Fig. 27.35, a bar magnet moves toward a...Ch. 27 - Figure 27.36 shows two concentric conducting...Ch. 27 - Fluctuations in Earths magnetic field due to...Ch. 27 - Chapter 26 stated that a static magnetic field...
Ch. 27 - Can an induced electric field exist in the absence...Ch. 27 - A car battery has a 12-V emf, yet energy from the...Ch. 27 - Prob. 7FTDCh. 27 - Prob. 8FTDCh. 27 - Prob. 9FTDCh. 27 - Prob. 10FTDCh. 27 - It takes work to push two bar magnets together...Ch. 27 - A small magnet is dropped into each of two hollow...Ch. 27 - Prob. 13FTDCh. 27 - Show that the volt is the SI unit for the rate of...Ch. 27 - Find the magnetic flux through a 5.0-cm-diameter...Ch. 27 - A circular wire loop 45 cm in diameter has...Ch. 27 - Prob. 17ECh. 27 - Prob. 18ECh. 27 - Find the self-inductance of a 1500-turn solenoid...Ch. 27 - Prob. 20ECh. 27 - Prob. 21ECh. 27 - Prob. 22ECh. 27 - What inductance should you put in series with a...Ch. 27 - The current in a series RL circuit increases to...Ch. 27 - Prob. 25ECh. 27 - Prob. 26ECh. 27 - Prob. 27ECh. 27 - A 1250-turn solenoid 23.2 cm long and 1.58 cm in...Ch. 27 - Prob. 29ECh. 27 - The worlds strongest magnet that can produce a...Ch. 27 - Find the magnetic-field strength in a region where...Ch. 27 - Prob. 32ECh. 27 - Find an expression for the electric-field strength...Ch. 27 - A conducting loop of area A and resistance R lies...Ch. 27 - A conducting loop with area 0.15 m2 and resistance...Ch. 27 - A square wire loop of side l and resistance R is...Ch. 27 - A 5-turn coil 1.0 cm in diameter is rotated at 10...Ch. 27 - A magnetic field is given by B = B0(x/x0)2k, where...Ch. 27 - Prob. 39PCh. 27 - In Example 27.2 take a = 1.0 cm, w = 3.5 cm, and l...Ch. 27 - A 2000-turn solenoid is 2.0 m long and 15 cm in...Ch. 27 - A stent is a cylindrical tube, often made of metal...Ch. 27 - Prob. 43PCh. 27 - Youre an electrical engineer designing an...Ch. 27 - A generator consists of a rectangular coil 75 cm...Ch. 27 - Figure 27.39 shows a pair of parallel conducting...Ch. 27 - Prob. 47PCh. 27 - Prob. 48PCh. 27 - Prob. 49PCh. 27 - The magnetic field inside a solenoid of circular...Ch. 27 - An electron is inside a solenoid, 28 cm from the...Ch. 27 - During lab, youre given a circular wire loop of...Ch. 27 - A flip coil is used to measure magnetic fields....Ch. 27 - Prob. 54PCh. 27 - Prob. 55PCh. 27 - In Fig. 27.23a, take R = 2.5 k and 0 = 50 V. When...Ch. 27 - How long does it take to dissipate 90% of the...Ch. 27 - Prob. 58PCh. 27 - Prob. 59PCh. 27 - Prob. 60PCh. 27 - In Fig. 27.40, take 0 = 12 V, R1 = 4.0 , R2 = 8.0...Ch. 27 - Prob. 62PCh. 27 - Prob. 63PCh. 27 - Your hospital is installing a new MRI scanner...Ch. 27 - A neutron stars magnetic field is about 108 T....Ch. 27 - Prob. 66PCh. 27 - Prob. 67PCh. 27 - Prob. 68PCh. 27 - An electric field and a magnetic field have the...Ch. 27 - Prob. 70PCh. 27 - Prob. 71PCh. 27 - Prob. 72PCh. 27 - Prob. 73PCh. 27 - A circular wire loop of radius a and resistance R...Ch. 27 - The bar in Problem 46 has mass m and is initially...Ch. 27 - Use the node and loop laws to determine the...Ch. 27 - Prob. 77PCh. 27 - You and your roommate are headed to Cancn for...Ch. 27 - One way to measure blood flow when blood vessels...Ch. 27 - Clever farmers with power lines crossing their...Ch. 27 - Clever farmers with power lines crossing their...Ch. 27 - Clever farmers with power lines crossing their...Ch. 27 - Clever farmers with power lines crossing their...
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- A cyclotron is used to produce a beam of high-energy deuterons that then collide with a target to produce radioactive isotopes for a medical procedure. Deuterons are nuclei of deuterium, an isotope of hydrogen, consisting of one neutron and one proton, with total mass 3.34×10−27kg. The deuterons exit the cyclotron with a kinetic energy of 6.10 MeV . What is the speed of the deuterons when they exit? If the magnetic field inside the cyclotron is 1.25 T, what is the diameter of the deuterons' largest orbit, just before they exit? If the beam current is 380 μA how many deuterons strike the target each second?arrow_forwardNo magnetic poles have ever been seen in nature, but we can assume that they exist and generalize Maxwell's equations accordingly. The generalized Maxwell equations in this case (in Gaussian units) will be as follows: V.Ē = 47Pe V.B = 4TPm 1 0B 4 Jm V xE = с де V ×B = c ôt -Je In the above expressions, pm is the magnetic charge density and jm is the magnetic current density. For simplicity, we denote the set of electrical and magnetic quantities by e and M. in other words M = (B, Jm; Pm, ...) , E = (E, Je, Pe, ...)arrow_forwardA velocity selector consists of electric and magnetic fields described by the expressions E = E k and B = B ĵ, with B = 10.0 mT. Find the value of E (in kV/m) such that a 840 eV electron moving in the negative x-direction is undeflected. kV/m (b) What If? For the value of E found in part (a), what would the kinetic energy of a proton have to be (in MeV) for it to move undeflected in the negative x-direction? MeV A cyclotron designed to accelerate protons has a magnetic field of magnitude 0.640 T over a region of radius 1.80 m. (a) What is the cyclotron frequency? rad/s (b) What is the maximum speed acquired by the protons? m/sarrow_forward
- Consider the mass spectrometer shown schematically in Figure P19.36. The electric field between the plates of the velocity selector is 950 V/m, and the magnetic fields in both the velocity selector and the deflection chamber have magnitudes of 0.930 T. Calculate the radius of the path in the system for a singly charged ion with mass m = 2.18 × 10−26 kg. Hint: See Problem 35.arrow_forwardA surgeon is attempting to measure the speed of blood flow in an aorta (a blood vessel) prior to surgery. The surgeon applies a 2.33 Tesla B-field perpendicular to the flow of blood. A little while later they measure the potential difference across the walls of the aorta and then estimate from that measurement that the blood is flowing at 90 cm/s. Suppose that the aorta has a radius of 1.32 cm. What potential difference (in Volts) did the surgeon notice (measure) to make the above speed estimation? Potential difference across the aorta = I Varrow_forwardBacteria can be identified by using a time-of-flight mass spectrometer to measure their chemical composition. First, a very short laser pulse vaporizes and ionizes a bacterial sample. The positive ions are accelerated, in vacuum, through a -15 kV potential difference, and then they travel at constant speed through a 1.5-m-long drift tube to a detector that records their arrival times. An ion's time of flight depends on its mass, so a record of the arrival times can be used to determine the masses of the biomolecules that were released from the bacteria. Each type of bacteria has a unique set of proteins with different masses, so the mass spectrum is a fingerprint for identifying bacteria. Part A What is the mass in kDa of an ionized protein that is detected 51 us after the laser pulse? You can assume that the protein is singly ionized (g = +e) which is mostly true in practice. You can also neglect the time needed to accelerate through the potential difference because it is very small…arrow_forward
- An ion that is singly charged, q=1.602x1019 C, and has mass 2.3x1026 kg, enters the mass spectrometer shown right. The electric field has a value of 2,900 V/m while the magnetic field both inside and outside the velocity selector points into the page and has value of 0.060 T a) What will the value of the radius of the ion's obit be? B) In detector this layout would you be able to detect negatively charged ions? Why or why not?arrow_forwardA particle passes through a mass spectrometer as illustrated in Figure P19.36. The electric field between the plates of the velocity selector has a magnitude of 8 250 V/m, and the magnetic fields in both the velocity selector and the deflection chamber have magnitudes of 0.093 1 T. In the deflection chamber the particle strikes a photographic plate 39.6 cm removed from its exit point after traveling in a semicircle. (a) What is the mass-to-charge ratio of the particle? (b) What is the mass of the particle if it is doubly ionized? (c) What is its identity, assuming it’s an element?arrow_forwardQ#02. A strip of copper 150um thick and 45cm wide is placed in a uniform magnetic field B of magnitude 0.85T, with B perpendicular to the strip. A current i = 2.3 mA is then sent to the strip such that a Hall potential difference V appears across the width of the strip. Calculate V. (the number of charge carriers per unit volume for copper is 8.47×108electrons/m³).arrow_forward
- a) What would the Hall voltage be (in µV) if a 2.40 T field is applied across a 13-gauge copper wire (1.829 mm in diameter) carrying a 22.0 A current? (Assume the free charge density of copper is 8.342 ✕ 1028 e−/m3.) b)A mirror hangs 1.62 m above the floor on a vertical wall. A ray of sunlight, reflected off the mirror, forms a spot on the floor 1.12 m from the wall. Later in the day, the spot has moved to a point 2.50 m from the wall. What is the change in the angle of elevation of the Sun, between the two observations? c)Components of some computers communicate with each other through optical fibers having an index of refraction n = 1.45. What time in nanoseconds is required for a signal to travel 0.180 m through such a fiber?arrow_forwardMagnetic fields within a sunspot can be as strong as 0.4 T. (By comparison, the earth’s magnetic field is about 1/10,000 as strong.) Sunspots can be as large as 25,000 km in radius. The material in a sunspot has a density of about 3 x 10-4 kg/m3 . Assume m for the sunspot material is µ0. If 100% of the magneticfield energy stored in a sunspot could be used to eject the sunspot’s material away from the sun’s surface, at what speed would that material be ejected? Compare to the sun’s escape speed, which is about 6 x 105 m/s.arrow_forwardA rocket zooms past the earth at v= 2.0 x 10 m/s. Scientists on the rocket have created the electric and magnetic fields shown in the figure.(Figure 1) Assume that B = 0.60 T and E= 6.0x105 V/m. Figure B E 2.0 x 10 m/s 1 of 1 What is the electric field strength measured by an earthbound scientist? Express your answer using two significant figures. 5 ΑΣΦ E = Submit Part B X Incorrect; Try Again; One attempt remaining Check your signs. O Up -6.105 What is the direction of the electric field measured by an earthbound scientis Down Submit Part C O Left O Right O Into the page O Out of the page Previous Answers Request Answer B = 0.60 T Submit ? Request Answer What is the magnetic field strength measured by an earthbound scientist? Express your answer using two significant figures. Correct Previous Answers V/marrow_forward
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