What is parallax?
a. Two lines in the same plane that never meet.
b. The way an object looks the same regardless of the observer's location.
c. The change in apparent relative positions of different parts of an object when seen from different angles.
d. The arrangement of two parts of an object so that one is always seen as directly in front of the other.
e. Two lines that cross.
c
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A 1.0-µF capacitor and a 2.0-µF capacitor are connected together, and then that combination is connected across a 3.0-V potential source (a battery)
What is the potential difference across the 2.0-µF capacitor if the capacitors are connected (a) in series or (b) in parallel?
What is the surface temperature of a star, given that its radiation peak occurs at a frequency of 1.86 × 1015 Hz?
A) 17,000 K B) 14,500 K C) 19,000 K D) 20,400 K E) 18,000 K
What was the last geological period in Earth's history during which the dinosaurs lived?
A) The Cretaceous Period B) The Tertiary Period C) The Triassic Period D) The Carboniferous Period
Two long parallel wires 79.4 cm apart are carrying currents of 12.6 A and 28.1 A in the opposite direction. What is the magnitude of the magnetic field halfway between the wires?
a. 7.81E–6 T b. 6.35E–6 T c. 2.05E–5 T d. 1.42E–5 T e. 1.03E–5 T