A magnetic field of 2.00 T is applied to a bubble chamber to make the tracks of protons and other charged particles identifiable by the radius of the circles they move in. If a high-energy proton moves along an arc of a 3.30-m circle, what is the momentum of the proton? [q = 1.60 × 10^?19 C, m = 1.67 × 10^?27 kg]
1.06 C 10?18 kg / m/s
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At what angle, with the surface, must light strike glass (refractive index 1.6 ) in order to completely polarize the reflected ray?
A) 32° B) 86.° C) 34.° D) 11.° E) 56.°
Jack, a quarterback, imparts a spin with his fingers when he throws the football during a match. The concept of _____ explains why the ball continues to spin rapidly as it flies through the air
A) kinetic energy B) angular momentum C) linear force D) specific gravity
A dime is 1.8 cm in diameter. Earth's Moon is 3.844 × 10^10 cm from Earth and has a diameter of 3.76 × 10^8 cm. At what distance from your eye would you have to hold a dime so that it has the same angular diameter as the full Moon?
a. 200 cm b. 2 cm c. 0.2 cm d. 2 AU e. 2 LY
Dark matter is made of
A) slow-moving "magnetons" that were created during the big bang. B) fast moving "gluons" that were created during the big bang. C) Both of the above. D) an unknown material that has never been directly observed in laboratories. E) soap bubbles.