Two charged particles are located on the x-axis. The particle with charge q1 = 3.70 µC
is located at
x1 = 1.25 cm
and the particle with charge
q2 = −2.30 µC
is located at
x2 = −1.80 cm.
(a)
Determine the total electric potential (in V) at the origin.
V
(b)
Determine the total electric potential (in V) at the point with coordinates (0, 1.50 cm).
V

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.

Coal contains energy. a. light b. kinetic c. chemical d. mechanical