Which of the following are true waves, as the word is defined in physics?
A) a water wave coming into a beach, after it has broken
B) water rushing downstream
C) Both of the above.
D) a sports wave [called "the wave"] at a sports arena
E) None of the above.
D
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How many elements have been identified?
a. 92 b. 104 c. 114 d. over 200 e. none of the above
The sequence OBAFGKM orders the stars in decreasing temperature and decreasing mass.
Answer the following statement true (T) or false (F)
An ideal solenoid having 200 turns and carrying a current of 2.0 A is 25 cm long. What is the magnitude of the magnetic field at the center of the solenoid? (?0 = 4? × 10-7 T ? m/A)
What will be an ideal response?
If a binary system has a period of 4 years and a separation of 5 AU, then the total mass is 7.8 solar masses
Indicate whether the statement is true or false