The energy difference between adjacent orbit radii in a hydrogen atom
A) decreases with increasing values of n.
B) increases with increasing values of n.
C) remains constant for all values of n.
D) varies randomly with increasing values of n.
A
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The overall fusion reaction by which the Sun currently produces energy is
A) 3 H ? 1 Li + energy. B) 3 He ? 1 C + energy. C) 4 H ? 4 He + energy. D) 6 H ? 1 He + energy. E) 4 H ? 1 He + energy.
A straight wire of length 70 cm carries a current of 50 A and makes an angle of 60° with a uniform magnetic field. If the force on the wire is 1.0 N what is the magnitude of?
a. 41 mT b. 33 mT c. 55 mT d. 87 mT e. 57 mT
The uncertainty principle states that a particle cannot be precisely localized
Indicate whether the statement is true or false
A rectangular coil, with corners labeled ABCD, of length L and width w is placed in a magnetic field B as shown in Figure 27-6. If there is a current I flowing through this coil, what is the force acting on section AB of this coil?
A) ILB sin? B) ILB cos ? C) ILB D) 0 N E) ILB/2