Earth spins completely upright like a giant top
a. True
b. False
Indicate whether the statement is true or false
False
You might also like to view...
An isolated black hole in space would be difficult to detect because
a. there would be no light source nearby.
b. it would not be rotating rapidly.
c. it would be stationary.
d. very little matter would be falling into it.
e. there would be very few stars behind it whose light the black hole could block out.
If your heart is beating at 76.0 beats per minute, what is the frequency of your heart's oscillations in hertz?
A) 2.54 Hz B) 3.98 Hz C) 4560 Hz D) 1450 Hz E) 1.27 Hz
Assuming a pupil diameter of 3 mm, what is the angular resolution of the human eye for light at the middle of the visible spectrum (550 nm)?
A) 0.8° B) 0.2° C) 2 mrad D) 0.01° E) 2°
Reducing the lens aperture size is a scheme one can use to reduce the occurrence of which of the following effects?
a. spherical aberration b. mirages c. chromatic aberration d. light scattering