The maximum displacement of points on a wave from the equilibrium position is the wave's __________
Fill in the blank(s) with correct word
amplitude
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Because Jupiter's four large moons were discovered by Galileo, they are called ______________ moons
Fill in the blank(s) with correct word
The age of a star cluster can be approximated by finding its turnoff point in the distribution of data points that represent stars on the H-R Diagram
a. True b. False Indicate whether the statement is true or false
Suppose we have a cube containing one mole of gold and another cube containing one mole of aluminum. (The gold cube has more than 7 times the mass of the aluminum cube.) Both are initially at room temperature. Suppose that we increase the temperature of each by 10 K. Which cube’s thermal energy likely has increased more?
A. The gold cube B. The aluminum cube C. Each cube’s internal energy increase is about the same. D. One cannot say without measuring.
Energy Density: A 4.4 × 1014 Hz laser emits a 2.1 ?s pulse that is 5.0 mm in diameter. The energy density in the beam is 0.24 J/m3. How many wavelengths are there in the length of the beam? (c = 3.0 × 108 m/s, ?0 = 4? × 10-7 T ? m/A, ?0 = 8.85 × 10-12 C2/N ? m2)
A. 9.2 × 108 B. 2.8 × 109 C. 2.8 × 108 D. 9.2 × 109 E. 2.8 × 1010