What effect does an increase in the mass of the virtual exchange particle have on the range of the force it mediates?
A) decreases it
B) increases it
C) has no appreciable effect
D) decreases charged particle interactions and increases neutral particle interactions
A
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A rocket obeys the principles of recoil. However, it is much more difficult to apply Newton's second law to a rocket because
A. there is actually sideways momentum, because a rocket motor is just a well-controlled explosion. B. the rocket pushes against air but the air is a fluid. C. Newton's three laws do not apply in outer space. D. as the rocket motor fires the total mass of the rocket changes.
Baryon number is conserved in all interactions
a. True b. False Indicate whether the statement is true or false
The emission of a line from the Balmer series is followed almost immediately by the emission of a line from the Lyman series. This will be true for
a. only the first line of the Balmer series and the first line of the Lyman series. b. all the lines of the Balmer series followed by only the first line of the Lyman series. c. only the first line of the Balmer series followed by any of the lines of the Lyman series. d. all the lines of the Balmer series followed by any of the lines of the Lyman series.
The insulation in walls uses which of the following methods to prevent heat transfer?
a. Conduction b. Convection c. Radiation d. Conduction and convection e. All of these