Current data suggest that ________ have at least one planet.
A) about 1 in 1 million stars
B) about 1% of all stars
C) about 10% of all stars
D) most stars
E) 100% of all stars
D) most stars
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A closed, sealed can of air placed on a hot stove. The contained air undergoes an increase in
A) mass. B) temperature. C) both of these D) neither of these
Mercury, with a higher eccentricity orbit, should change its orbital speed more than do Venus or Earth
Indicate whether the statement is true or false
The time P required for a spring-mass system to complete one full oscillation can be expressed in terms of the attached mass m and the spring constant of the spring k in the form P = kmbkc, where k, b, and c are dimensionless constants
What must be the values of b and c? The dimensions of k are [M]/[T]2.
When a capacitor has a charge of magnitude 80 ?C on each plate the potential difference across the plates is 16 V. How much energy is stored in this capacitor when the potential difference across its plates is 42 V?
A. 1.0 mJ B. 4.4 mJ C. 3.2 mJ D. 1.4 mJ E. 1.7 mJ