The magnetic force on a charged particle moving at a constant speed in a uniform magnetic field will be halved when the angle between the velocity of the particle and the direction of the magnetic field changes from 25.0° to
a. 50.0°.
c. 57.7°.
b. 12.5°.
d. 12.2°.
D
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The Atlantic Ocean has existed for most of the time since Earth's crust cooled.
Answer the following statement true (T) or false (F)
Exhibit 17-1
The figure below shows a sine wave at one point of a string as a function of time.
?
?
Use the exhibit to answer the following question(s).
Refer to Exhibit 17-1. Which of the graphs below shows a wave where the amplitude and frequency are each reduced in half?
A.
B.
C.
D.
E.
The central core inside an atom is
a. the electron. b. the proton. c. the neutron. d. the nucleus. e. none of the above.
The element rubidium (Rb, atomic number 37) is in Group IA of the periodic table, and the element chlorine (Cl, atomic number 17) is in Group VIIB of the periodic table. RbCl should have ______________bonding.
Fill in the blank(s) with the appropriate word(s).