The first Apollo missions to the moon found the maria to be plains of solid lava
Indicate whether the statement is true or false
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A total solar eclipse will be visible from the same location on Earth one saros cycle later
Indicate whether the statement is true or false
When a single boxcar in the freight yard hooks onto a stationary string of four boxcars, there is some kinetic energy lost. Which of the following could account for the missing energy?
A. Sound energy in the loud CLANG when they hook together and heat energy in the clamping mechanism between cars as it opens and then captures the fifth boxcar B. Heat energy in the clamping mechanism between cars as it opens and then captures the fifth boxcar C. Sound energy in the loud CLANG when they hook together
A solid uniform sphere is rolling without slipping along a horizontal surface with a speed of 5.5 m/s
when it starts up a ramp that makes an angle of 25° with the horizontal. What is the speed of the sphere after it has rolled 3.0 m up as measured along the surface of the ramp? A) 4.0 m/s B) 8.0 m/s C) 1.9 m/s D) 2.2 m/s E) 3.5 m/s
When electrons fill a subshell in which the orbitals have equal energy, the order in which the orbitals are filled is such that
a. a minimum number of electrons has unpaired spins. b. a minimum number of electrons has intrinsic angular momentum. c. a maximum number of electrons has unpaired spins. d. a maximum number of electrons first fills the next energy level. e. the maximum number of electrons has the same set of quantum numbers.