Studies have shown that the ice located in the south pole of Mars is mostly ____
a. H2O
b. NO2
c. CO2
d. O2
e. FeO2
c
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How can the big bang still be found even though you may not be able to see it with your eyes? In what band of the electromagnetic spectrum has it been detected?
What will be an ideal response?
A space exploration satellite is orbiting a spherical asteroid whose mass is 4.65 × 1016 kg and whose radius is 39,600 m, at an altitude of 12,400 m above the surface of the asteroid
In order to make a soft landing, Mission Control sends it a signal to fire a short burst of its retro rockets to change its speed to one that will put the satellite in an elliptical orbit with a periapsis (the distance of closest approach, as measured from the center of the asteroid) equal to the radius of the asteroid. What is the speed of the satellite when it reaches the surface of the asteroid? G = 6.67 x 10-11 N•m2/kg2. A) 4.32 m/s B) 6.11 m/s C) 7.18 m/s D) 9.43 m/s E) 5.74 m/s
A resistor, an uncharged capacitor, a dc voltage source, and an open switch are all connected in series. The switch is closed at time t = 0 s. Which one of the following is a correct statement about this circuit?
A) The charge on the capacitor after one time constant is 1/e of its maximum value. B) The voltage on the capacitor after one time constant is 1/e of the maximum value. C) The voltage on this capacitor after one time constant is 100% of its maximum value. D) The charge on the capacitor after four time constants is about 98% of the maximum value. E) The charge on the capacitor after one time constant is 50% of its maximum value.
A solid solution of two or more metals is called a(n) ______________
Fill in the blank(s) with correct word