Give an example of the Doppler effect being used in a baseball game
What will be an ideal response?
The Doppler "gun" can focus on the motion of the baseball, and give us the speed that the pitcher is delivering it to the plate.
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Event A occurs before event B in a certain frame of reference. In another frame of reference, event A could occur
A) after event B. B) simultaneous with event B. C) either of these D) neither of these
What is the net force inward acting on a spherical bathysphere of diameter 2.00 m at an ocean depth of 1000 m? (The pressure inside the bathysphere is, hopefully, 1 atm.) ?sea water = 1.02 × 10^3 kg/m3
a. 1.26 × 10^4 N b. 1.26 × 10^6 N c. 1.26 × 10^8 N d. 1.26 × 10^10 N e. 1.26 × 10^2 N
Neutron stars do NOT have
A) sizes comparable to large cities. B) large surface gravities, compared to the Sun. C) masses greater than 1.4 solar masses. D) strong magnetic fields. E) rotation periods comparable to the Sun's.
How are the Tully-Fisher calculations for the distance to a galaxy different from those used for spectroscopic parallax?