An exponent, such as the 4 in the expression 94, means:
a. the number of times the number before the exponent is multiplied by 10 (9 × 10 × 10 × 10 × 10).
b. the number of times the number before the exponent is multiplied by itself (9 × 9 × 9 × 9).
c. the number to multiply the first number by (9 × 4).
d. the number of times the digit is written (9999).
e. the number to add to the first number (9 + 4).
b
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What will be an ideal response?
An electron is moving at 
m/s at an angle of 40 
to a 0.80 T magnetic field. What is the magnitude of the force on the electron?
A. 
B. 
C. 
D. 
E. 
Exclusion Principle: How many values can the magnetic quantum number have in a hydrogen atom for which the orbital angular momentum quantum number is equal to 8?
A. 9 B. 15 C. 5 D. 8 E. 17