Two identical particles, each with a mass of 2.0 mg and a charge of 25 nC, are released simultaneously from rest when the two are 4.0 cm apart. What is the speed of either particle at the instant when the two are separated by 10 cm?
a. 7.3 m/s
b. 9.8 m/s
c. 9.2 m/s
d. 6.5 m/s
e. 4.6 m/s
D
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a. True b. False Indicate whether the statement is true or false
The final step in transporting energy to the surface of the Sun is via convection
Indicate whether the statement is true or false
A package is oscillating on a spring scale with a period of 4.60 s. At time t = 0.00 s the package has zero speed and is at x = 8.30 cm. At what time after t = 0.00 s will the package first be at x = 4.15 cm?
A) 0.575 s B) 0.767 s C) 1.15 s D) 1.30 s E) 1.53 s
The magnetic field in a cyclotron is 0.50 T. Find the magnitude of the magnetic force on a proton with velocity of 
m/s in a plane perpendicular to the field.
A. 
B. 
C. 
D. 