Predict/Calculate A beam of protons with various speeds is directed in the positive x direction. The beam enters a region with a uniform magnetic field of magnitude 0.52 T pointing in the negative z direction, as indicated in Figure 22-58. It is desired to use a uniform electric field (in addition to the magnetic field) to select from this beam only those protons with a speed of 1.42 × 10 5 —that is, only these protons should be undeflected by the two fields. (a) Determine the magnitude and direction of the electric field that yields the desired result. (b) Suppose the electric field is to be produced by a parallel-plate capacitor with a plate separation of 2.5 cm. What potential difference is required between the plates? (c) Which plate in Figure 22-58 (top or bottom) should be positively charged? Explain. Figure 22-58 Problem 76
Predict/Calculate A beam of protons with various speeds is directed in the positive x direction. The beam enters a region with a uniform magnetic field of magnitude 0.52 T pointing in the negative z direction, as indicated in Figure 22-58. It is desired to use a uniform electric field (in addition to the magnetic field) to select from this beam only those protons with a speed of 1.42 × 10 5 —that is, only these protons should be undeflected by the two fields. (a) Determine the magnitude and direction of the electric field that yields the desired result. (b) Suppose the electric field is to be produced by a parallel-plate capacitor with a plate separation of 2.5 cm. What potential difference is required between the plates? (c) Which plate in Figure 22-58 (top or bottom) should be positively charged? Explain. Figure 22-58 Problem 76
Predict/Calculate A beam of protons with various speeds is directed in the positive x direction. The beam enters a region with a uniform magnetic field of magnitude 0.52 T pointing in the negative z direction, as indicated in Figure 22-58. It is desired to use a uniform electric field (in addition to the magnetic field) to select from this beam only those protons with a speed of 1.42 × 105—that is, only these protons should be undeflected by the two fields. (a) Determine the magnitude and direction of the electric field that yields the desired result. (b) Suppose the electric field is to be produced by a parallel-plate capacitor with a plate separation of 2.5 cm. What potential difference is required between the plates? (c) Which plate in Figure 22-58 (top or bottom) should be positively charged? Explain.
Lab 8 Part 3 PHET Wave Interface simulation.
I am having trouble with this part of the lab.
Mick and Rick are twins born on Earth in the year 2175. Rick grows up to be an Earth-bound robotics technician while Mick becomes an intergalactic astronaut. Mick leaves the Earth on his first space mission in the year 2200 and travels, according to his clock, for 10 years at a speed of 0.75c. Unfortunately, at this point in his journey, the structure of his ship undergoes mechanical breakdown and the ship explodes. How old is Rick when his brother dies?
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