Earth behaves as an artificial pulsar, with the strongest pulses for alien observers when North America is either rising or setting
Indicate whether the statement is true or false
TRUE
Physics & Space Science
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To be dimensionally consistent, velocity [L/T], force 
mass [M], and length [L] must be related as follows.
A. 
B. 
C. 
D. velocity = force length/mass
Physics & Space Science
If a wave has a frequency of 8 Hz, it has a period of _______.
a. 1/8 s. b. 8.5 s. c. 8 s. d. 4 s.
Physics & Space Science
EM waves in a vacuum travel at a speed
a. of c b. varying with their wavelength c. varying with their intensity d. of 299,792,458 m/s
Physics & Space Science
Projectile Motion: A plane flying horizontally at a speed of 50 m/s and at an elevation of 160 m drops a package, and 2.0 s later it drops a second package. How far apart will the two packages land on the ground if air resistance is negligible?
A. 100 m B. 160 m C. 180 m D. 320 m
Physics & Space Science