A charge of 80 nC is uniformly distributed along the x axis from x = 0 to x = 2.0 m. Determine the magnitude of the electric field at a point on the x axis with x = 8.0 m
a. 30 N/C
b. 15 N/C
c. 48 N/C
d. 90 N/C
e. 60 N/C
b
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Which of the following best explains why many jovian moons have been more geologically active than the Moon or Mercury?
A) Jovian moons are made mostly of ice that can melt or deform at lower temperatures than can the rock and metal that make up the Moon and Mercury. B) The jovian moons are considerably larger than the Moon and Mercury and therefore have retained much more internal heat. C) The jovian moons probably have far more internal heat generated by radioactive decay than do the Moon or Mercury. D) Because of their greater distances from the Sun, the jovian moons receive much less heat from the Sun.
Which quantity listed below is an integral quantity?
(A) Velocity (B) Pressure (C) Temperature (D) Mass
The biggest obstacle to life being present in the atmospheres of Jupiter and Saturn is the
A) absence of liquid water in their atmospheres B) high levels of solar radiation that would destroy any biological molecules C) strong vertical wind speeds that would rapidly carry organisms into the hot interior where they would be destroyed D) very low temperatures at the tops of the clouds where water would not be liquid
Our second closest star, Alpha Centauri, is 4.0 lightyears distant. On a particular night, it is located 37.° up from the horizon, in a vertical plane. What are its x and y coordinates in this plane?
What will be an ideal response?