An electron in a TV picture tube is accelerated through a potential difference of 20 kV before it hits the screen. What is the kinetic energy of the electron in electron volts? (1 eV = 1.6 10-19 J)
a. 6.25 1022 eV
c. 2.0 104 eV
b. 1.0 104 eV
d. 3.2 10-22 eV
Question 2
Consider a point on a bicycle wheel as the wheel turns about a fixed axis, neither speeding up nor slowing down. Compare the linear and angular accelerations of the point.
a. Both are zero.
c. Only the linear acceleration is zero.
b. Only the angular acceleration is zero.
d. Neither is zero.
Electron micrographs of a cellular membrane.
Electron Microscope Images of a Diatom
Banding of an esophageal varix; A, varix; B, insertion of tube with O-ring; C, O-ring is placed arou
Time course and phases of a nerve cell going from resting potential to action potential
Effect of stimulus strength on size of graded potential.
Pollen Tube Growth