How many different elements are in the compound C6H12O6?
A) 3
B) 6
C) 24
D) All of the elements are the same.
Answer: A
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Molecular Speeds: A sample of an ideal gas is heated and its Kelvin temperature doubles. If the root-mean-square speed of its molecules was originally v, what is the new root-mean-square speed?
A. 4v
B. 2v
C. v
D. v/
E. v/4
In which of the following energy level transitions for a hydrogen atom is a photon emitted?
a. n =1 to n = 2 b. n =3 to n = 2 c. n =2 to n = 1 d. n =1 to n = 4 e. n =4 to n = 3
A 25.0kg propeller may be considered a 4.5m-long rod spun about its center. What final angular velocity does the propeller have if a torque of 1100Nm is applied for 1.2s?
A. 31 rad/s B. 26 rad/s C. 7.8 rad/s D. 2.6 rad/s
A long solenoid (n = 80 turns/cm) carries a current of 70 mA. Determine the magnitude of the magnetic field inside the solenoid