Kirchhoff's voltage rule for a closed loop is an example of
A) conservation of energy.
B) conservation of charge.
C) conservation of momentum.
D) conservation of force.
A
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_______________ is the largest of the five moons of Uranus
Fill in the blank(s) with correct word
Two wires with the same resistance have the same diameter but different lengths. If wire 1 has length L1 and wire 2 has length L2, how do L1 and L2 compare if wire 1 is made from copper and wire 2 is made from aluminum? The resistivity of copper is 1.7 × 10^–5 ?·m and the resistivity of aluminum is 2.82 × 10^–5 ?·m
a. L1 = 1.7 L2 b. L1 = 0.60 L2 c. L1 = 2.8 L2 d. L1 = 0.36 L2
In the absence of air resistance, a projectile launched at the same speed at any angle will attain the greatest range when projected at
1) 30°. 2) 45°. 3) 60°. 4) 90°. In the case of throwing a heavy spear, not at the same speed but with the same force, the greatest range is attained more likely when thrown at 5) 30°. 6) 45°. 7) 60°. 8) 90°.
Which of the following can contribute to explaining why jovian moons are sometimes much more geologically active than terrestrial worlds of similar (or smaller) size?
a. ice-rich composition b. tidal heating c. orbiting far from the Sun d. orbiting far from their planet e. having a core of metal and rock