A particle (q = 3.0 mC, m = 20 g) has a speed of 20 m/s when it enters a region where the electric field has a constant magnitude of 80 N/C and a direction which is the same as the velocity of the particle. What is the speed of the particle 3.0 s after it enters this region?
a. 68 m/s
b. 44 m/s
c. 56 m/s
d. 80 m/s
e. 36 m/s
c
Physics & Space Science
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A 5.00 kg mass is located at (2.00 m, 0.00 m, 0.00 m) and a 3.00 kg mass is located at (0.00 m, 4.00 m, 0.00 m). The center of gravity of the system of masses is
A. (1.25 m, 1.25 m, 0). B. (1.50 m, 1.50 m, 0). C. (1.25 m, 1.50 m, 0). D. (1.50 m, 1.25 m, 0). E. (1.00 m, 1.00 m, 0).
Physics & Space Science
Some of Earth's rocks retain traces of the magnetic field that point backward to its field today
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
What occurs in a pan of water placed outdoors on a warm day?
A) evaporation B) condensation C) both of these D) neither of these
Physics & Space Science
When a gas changes phase to become a solid, energy is
A) absorbed. B) released. C) unchanged.
Physics & Space Science