A 40-?C charge is positioned on the x axis at x = 4.0 cm. Where should a ?60-?C charge be placed to produce a net electric field of zero at the origin?
a. ?5.3 cm
b. 5.7 cm
c. 4.9 cm
d. ?6.0 cm
e. +6.0 cm
c
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A charged particle enters a region of magnetic field at a speed of 2.8 x 104 m/s, at an angle of 37 degrees relative to the magnetic field direction. What will be the magnitude of the component of the particle’s velocity that is parallel to the magnetic field while it is in this region?
A. Insufficient information is given.
B. 
C. 
D. 
E.
At what local solar time will the first-quarter moon be on an observer's overhead meridian?
A 4.0-kg mass on the end of a string rotates in a circular motion on a horizontal frictionless table. The mass has a constant speed of 2.0 m/s and the radius of the circle is 0.80 m. What is the magnitude of the resultant force acting on the mass?
a. 39 N b. 20 N c. 44 N d. 0 N e. 30 N
Compounds of carbon are classified as ______________ compounds
Fill in the blank(s) with correct word