A satellite is in a circular orbit about the Earth at a distance of d = 5 times the Earth's radius above the surface. What is the speed of the satellite? (The radius of the Earth is 6.4 × 10^6 m.)
a. 4.2E+2 m/s
b. 1.3E+5 m/s
c. 3.2E+3 m/s
d. 3.3E+6 m/s
c
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If an atom emits a photon, that photon must have a wavelength ________.
A. that corresponds to the energy difference between two orbitals B. as long as the distance between two orbitals C. shorter than the absorbed photon that caused the emission D. that corresponds to the lowest energy level of that atom E. that corresponds to twice the energy difference between two orbitals
At the instant a 2.0-kg particle has a velocity of 4.0 m/s in the positive x direction, a 3.0-kg particle has a velocity of 5.0 m/s in the positive y direction. What is the speed of the center of mass of the two-particle system?
a. 3.8 m/s b. 3.4 m/s c. 5.0 m/s d. 4.4 m/s e. 4.6 m/s
Some species of whales can dive to depths of one kilometer. What is the total pressure they experience at this depth? (rsea = 1 020 kg/m3 and 1.01 × 10^5 N/m2 = 1 ATM.)
a. 9.00 ATM b. 90.0 ATM c. 100 ATM d. 111 ATM e. 130 ATM
Today most scientists favor the capture theory of the Moon's origin, since it would explain why the Moon still orbits in the ecliptic plane, as do other planets
Indicate whether the statement is true or false