When an unstable Co nucleus undergoes beta decay, the nucleus formed is that of
a. Co.
b. Cu.
c. Fe.
d. Mn.
e. Ni.
e
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If the acceleration vector of an object is directed anti-parallel to the velocity vector, then
A) the object is speeding up. B) the object is slowing down. C) the object is turning. D) the object is at rest. E) this situation would not be physically possible.
What is the radius of the ground state of He+?
A. 0.0529 nm B. 0.193 nm C. 0.0265 nm D. 0.106 nm E. 0.212 nm
What is the hour angle of a star crossing your meridian?
A) -6 hours B) 0 hours C) 6 hours D) It depends on your latitude. E) It depends on the right ascension of the star.
A rectangular coil (0.13 m × 0.98 m) has 277 turns and is in a uniform magnetic field of 0.50 T. If the orientation of the coil is varied through all possible positions, the maximum torque on the coil by magnetic forces is 0.096 N?m. What is the current in the coil?
a. 6.2E–4 A b. 1.5E+0 A c. 5.4E–3 A d. 4.2E+2 A e. 8.8E–5 A