The remaining core of a planetary nebula is called a(n) ______________
Fill in the blank(s) with correct word
white dwarf
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What is the root mean squared velocity of the nitrogen molecules in one mole of an ideal gas at a pressure of 1.50 atmospheres and a temperature of 20
? 
A. 310 m/s B. 367 m/s C. 425 m/s D. 511 m/s E. 525 m/s
Charge is distributed uniformly on the surface of a spherical nonconducting shell. A point particle with charge q is inside. The electrical force on the particle q is least when:
A) it is near the inside surface of the shell B) it is at the center of the shell C) it is halfway between the shell center and the inside surface D) it is near, but not at, the center of the shell E) all of the above (the force is zero everywhere inside)
If the radiant energy from the Sun comes in as a plane EM wave of intensity 1340 W/m2, calculate the peak values of E and B.
A. 300 V/m, 10?4 T B. 1000 V/m, 3.35 × 10?6 T C. 225 V/m, 1.60× 10?3 T D. 111 V/m, 3.00 × 10?5 T E. 711 V/m, 2.37 × 10?6 T
A spacecraft (mass = m) orbits a planet (mass = M) in a circular orbit (radius = R). What is the minimum energy required to send this spacecraft to a distant point in space where the gravitational force on the spacecraft by the planet is negligible?
a. GmM/(4R) b. GmM/R c. GmM/(2R) d. GmM/(3R) e. 2GmM/(5R)