Outgassing refers to the formation of an atmosphere by the attraction of gases from the surrounding nebula
Indicate whether the statement is true or false
F
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What is the magnitude of the electric field 2.8 cm from a tiny object that carries an excess charge of –16 nC? (k = 1/4??0 = 9.0 × 109 N ? m2/C2 )
A) 180,000 N/C B) 5100 N/C C) 1.8 × 1014 N/C D) -180,000 N/C E) -5100 N/C
Every isolated proton in the universe is surrounded by its own
A) electric field. B) gravitational field. C) both of these D) neither of these
What is the total energy of an electron moving with a speed of 0.950c? (c = 3.0 × 108 m/s, mel = 9.11 × 10-31 kg)
A) 2.6 × 10-13 J B) 8.2 × 10-14 J C) 1.1 × 10-13 J D) 1.2 × 10-14 J
A 250-kg crate is on a rough ramp, inclined at 30° above the horizontal. The coefficient of kinetic friction between the crate and ramp is 0.22. A horizontal force of 5000 N is applied to the crate, pushing it up the ramp
What is the acceleration of the crate? A) 8.4 m/s2 B) 10 m/s2 C) 12 m/s2 D) 13 m/s2 E) 3.4 m/s2