A student adds two vectors with magnitudes of 200 and 70 . Which one of the following is the only possible choice for the magnitude of their sum?
a. 100
c. 200
b. 280
d. 70
C
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The explosion in a cannon exerts an average force of 30,000 N for 2.00 meters. The velocity of a 2.00 kg projectile shot from the cannon is
A. 198 m/s. B. 245 m/s. C. 302 m/s. D. 354 m/s. E. 412 m/s.
The sequence OBAFGKM orders the stars in decreasing temperature and decreasing mass.
Answer the following statement true (T) or false (F)
In the Compton effect, if a photon is scattered at a particular angle, the resulting shift in wavelength for the scattered photon
A) is the same for all incident energy photons. B) is greater for a higher energy incident photon. C) depends on the wavelength of the incident photon. D) is never the same for incident energy photons. E) is less for a higher energy incident photon.
What is the electron configuration for Li which has three electrons?
A) 1s3 B) 1s12s2 C) 1s22s1 D) 1s21p1 E) 1s11p2