This diagram represents an edge-on view of our Milky Way Galaxy. Of the four labeled points, which one is located closest to a place where evidence suggests we would find a 4 million solar-mass black hole?
A) point 1
B) point 2
C) point 3
D) point 4
B) point 2
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Spacecraft have landed on all of the terrestrial worlds
Indicate whether the statement is true or false
Which of the following statements are true about an object in two-dimensional projectile motion if we neglect air? (There could be more than one correct choice.)
A) The speed of the object is constant but its velocity is not constant. B) The acceleration of the object is +g when the object is rising and -g when it is falling. C) The acceleration of the object is zero at its highest point. D) The speed of the object is zero at its highest point. E) The horizontal acceleration is always zero and the vertical acceleration is always a non-zero constant downward.
Amir drives his ATV from coordinates (5.0 km, 25°) directly to (25.0 km, 45°) in 45 minutes. What is the ATV's speed?
a. 0.5 km/h b. 20.4 km/h c. 27.2 km/h d. 34.0 km/h
A 120-V rms signal at 60 Hz is applied across a series combination of a 30-mH inductor and a 100-? resistor. What is the rms value of the current in this circuit?
A) 1.2 A B) 1.8 A C) 0.80 A D) 1.6 A E) 1.4 A