Briefly explain why antimatter is so difficult to store after it is produced in laboratories.
What will be an ideal response?
Answer: When matter and antimatter meet, the result is mutual annihilation. Because everything on Earth is made of ordinary matter, it is difficult to prevent antimatter produced in the lab from contacting matter and quickly becoming annihilated.
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Consider an experiment where we send monochromatic light to a distant screen through a single narrow slit. The distance between adjacent dark fringes in the diffraction pattern displayed on the screen (A) increases, (B) decreases, or (C) remains the same if, The width of the slit increases
A. Increases B. Decreases C. Remains the same
Spiral galaxies are much more common in the centers of rich clusters than in the universe as a whole
Indicate whether the statement is true or false
Which of the following is possessed by a moving object, but not by a stationary object?
A. Mass B. Kinetic energy C. Energy D. Inertia
A doubly charged ion with speed 6.9 × 106 m/s enters a uniform 0.80-T magnetic field, traveling perpendicular to the field. Once in the field, it moves in a circular arc of radius 30 cm
What is the mass of this ion? (e = 1.60 × 10-19 C) A) 3.3 × 10-27 kg B) 6.7 × 10-27 kg C) 8.2 × 10-27 kg D) 11 × 10-27 kg