Calculate the de Broglie wavelength of a 0.145-kg baseball moving at a speed of 45.2 m/s
1.01 × 10^-34 m
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Velocity: A bat, flying toward the east at 2.0 m/s, emits a shriek that is reflected back to it from a wall that is 20.0 m in front of the bat at the instant the shriek is emitted. Sound travels at 340 m/s in the air. How many milliseconds after emitting the shriek does the bat hear the reflected echo from the wall?
Fill in the blank(s) with the appropriate word(s).
When a heavy barge floats above a fish swimming in the water below, does the PRESSURE exerted upon the fish change (and why)?
What will be an ideal response?
What is the wavelength (in meters) of a wave whose displacement is given by y = 0.5 sin(0.20x + 120t), where x and y are in meters and t in seconds?
A) 5.0 m B) 10. m C) 19. m D) 31. m E) 0.20 m
Car batteries are often rated in ampere-hours. This information designates the amount of ______ that the battery can supply
1.current 2.power 3.energy 4.charge 5.potential