A simple pendulum is suspended from the ceiling of a stationary elevator, and the period is measured. If the elevator accelerates upward, the period
1.increases.
2.decreases.
3.remains the same.
2
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Elements have similar chemical properties because they have the same number of electrons in their ______________
Fill in the blank(s) with correct word
Which orbital shapes are possible under the force of gravity?
A) ellipses only B) ellipses and spirals C) ellipses, parabolas, and hyperbolas D) ellipses, spirals, and parabolas E) spirals, circles, and squares
Find the electrical potential at 0.055 m from a point charge of 6.0 mC. (ke = 8.99 × 10^9 N×m2/C2)
a. 1.5 × 10^5 V c. 9.8 × 10^5 V b. 1.2 × 10^7 V d. 3.6 × 10^5 V
A15-? resistor is connected in parallel with a 30-? resistor. If this combination is now connected in series with an ideal 9.0-V battery and a 20-? resistor,
what is the current through the 15-? resistor? A) 0.26 A B) 0.20 A C) 0.13 A D) 0.10 A