A particle of positive charge q travels with velocity v towards the top of the page. The magnetic field present, B, points rightward. The force
1.points leftward.
2.points into the page.
3.points toward the bottom of the page.
4.points out of the page.
2
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What would be the gravitational force that a planet twice as massive as Earth and having twice Earth's radius exerts on a 59.1-kg astronaut?
A) 580 N B) 290 N C) 1160 N D) 118 N E) 1200 N
What layer of the Sun are we seeing in this photo?
A) photosphere B) chromosphere C) corona D) radiation zone
Charge of uniform density (40 pC/m2) is distributed on a spherical surface (radius = 1.0 cm), and a second concentric spherical surface (radius = 3.0 cm) carries a uniform charge density of 60 pC/m2 . What is the magnitude of the electric field at a point 4.0 cm from the center of the two surfaces?
a. 3.8 N/C b. 4.1 N/C c. 3.5 N/C d. 3.2 N/C e. 0.28 N/C
Henri Becquerel
A) discovered radium and polonium. B) discovered radioactivity. C) observed back-scattering from nuclei. D) invented the particle detector tube. E) proposed the tiny central nucleus idea.