An alpha particle is moving at a speed of 5 × 105 m/s in a direction perpendicular to a uniform magnetic field of strength 4 × 10-2 T
The charge on an alpha particle is 3.2 × 10-19 C and its mass is 6.6 × 10-27 kg. (a) As the alpha particle moves, its velocity is directed
(b) The magnitude of the force on the alpha particle is
(a) perpendicular to the magnetic field.
(b) 6.4 × 10-15 N.
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Unpolarized light of intensity I0 passes through two sheets of ideal polarizing material. If the transmitted intensity is 0.375I0, what is the angle between the polarizers?
a. 22.5° c. 30° b. 60° d. 45°
When a workman strikes a steel pipeline with a hammer, he generates both longitudinal and transverse waves. The two types of reflected waves return 2.4 s apart. How far away is the reflection point? (For steel, vL = 6.2 km/s, vT = 3.2 km/s)
Develop a reasonable layout of nodes and control volumes for the geometry shown in the sketch below. Provide a scale drawing showing the problem geometry overlaid with the nodes and control volumes. Identify each type of control volume used.
GIVEN
• Rectangular problem geometry with corners removed
FIND
(a) Reasonable layout of nodes and control volumes.
(b) Identify each type of control volume.
SKETCH
The ____ is the nuclear fusion of three helium nuclei to form a carbon nucleus
a. proton-proton chain b. Carbon-Nitrogen-Oxygen cycle (CNO cycle) c. triple-alpha process d. Coulomb barrier e. infrared cirrus