What is the typical number of solar eclipses that occur during a year?
A. one
B. zero
C. two
D. four
two
You might also like to view...
Hydrocarbons are first divided into aromatic and ______________ hydrocarbons
Fill in the blank(s) with correct word
A mirror lies flat on a table. A beam of light strikes the mirror with an angle of incidence or 15°, the reflected ray being to the right of the incident beam. The right edge of the mirror is then lifted so that the mirror now makes a 5° angle with the horizontal. What is the resulting angle between the incident beam and the reflected beam?
a. 25° c. 35° b. 20° d. The angle is not given.
Edwin Hubble was the first to classify galaxies in three main types: spirals, ellipticals and irregulars.
Answer the following statement true (T) or false (F)
What is the momentum in kg?m/s of a proton when it is moving with a speed of 0.60c?
A) 1.2 × 10-19 kg?m/s B) 1.3 × 10-19 kg?m/s C) 1.5 × 10-19 kg?m/s D) 3.0 × 10-19 kg?m/s E) 3.8 × 10-19 kg?m/s