An alpha particle (a He nucleus, containing two protons and two neutrons and having a mass of 6.64 × 10 −27 kg) traveling horizontally at 35.6 km/s enters a uniform, vertical, 1.80-T magnetic field, (a) What is the diameter of the path followed by this alpha panicle? (b) What effect does the magnetic field have on the speed of the particle? (c) What are the magnitude and direction of the acceleration of the alpha particle while it is in the magnetic field? (d) Explain why the speed of the particle does not change even though an unbalanced external force acts on it.
An alpha particle (a He nucleus, containing two protons and two neutrons and having a mass of 6.64 × 10 −27 kg) traveling horizontally at 35.6 km/s enters a uniform, vertical, 1.80-T magnetic field, (a) What is the diameter of the path followed by this alpha panicle? (b) What effect does the magnetic field have on the speed of the particle? (c) What are the magnitude and direction of the acceleration of the alpha particle while it is in the magnetic field? (d) Explain why the speed of the particle does not change even though an unbalanced external force acts on it.
An alpha particle (a He nucleus, containing two protons and two neutrons and having a mass of 6.64 × 10−27 kg) traveling horizontally at 35.6 km/s enters a uniform, vertical, 1.80-T magnetic field, (a) What is the diameter of the path followed by this alpha panicle? (b) What effect does the magnetic field have on the speed of the particle? (c) What are the magnitude and direction of the acceleration of the alpha particle while it is in the magnetic field? (d) Explain why the speed of the particle does not change even though an unbalanced external force acts on it.
3.63 • Leaping the River II. A physics professor did daredevil
stunts in his spare time. His last stunt was an attempt to jump across
a river on a motorcycle (Fig. P3.63). The takeoff ramp was inclined at
53.0°, the river was 40.0 m wide, and the far bank was 15.0 m lower
than the top of the ramp. The river itself was 100 m below the ramp.
Ignore air resistance. (a) What should his speed have been at the top of
the ramp to have just made it to the edge of the far bank? (b) If his speed
was only half the value found in part (a), where did he land?
Figure P3.63
53.0°
100 m
40.0 m→
15.0 m
Please solve and answer the question correctly please. Thank you!!
You throw a small rock straight up from the edge of a highway bridge that crosses a river. The rock passes you on its way down, 5.00 s after it was thrown. What is the speed of the rock just before it reaches the water 25.0 m below the point where the rock left your hand? Ignore air resistance.
Chapter 27 Solutions
University Physics with Modern Physics, Volume 1 (Chs. 1-20) (14th Edition)
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