Deuterium is much more abundant on Venus than Earth. What do scientists think this fact tells us about Venus?
A) that Venus has lost a tremendous amount of water as a result of molecules being split by ultraviolet light and the hydrogen escaping to space
B) that Venus once had a much stronger magnetic field than it does today
C) that the greenhouse effect on Venus must have been much weaker in the distant past
D) that volcanoes on Venus did not outgas as much water as volcanoes on Earth
A) that Venus has lost a tremendous amount of water as a result of molecules being split by ultraviolet light and the hydrogen escaping to space
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When you send a wave pulse down a rope or Slinky, it eventually dies out. What has become of the energy?
A) It was transformed into electromagnetic energy. B) It was transformed into Italian sausage. C) It was transformed into thermal energy. D) It was transformed into elastic energy. E) It vanished because energy is always lost in all physical processes.
A sound wave in a metal bar is an example of a longitudinal wave
a. True b. False Indicate whether the statement is true or false
At t = 0, a wheel rotating about a fixed axis at a constant angular acceleration of -0.40 rad/s2 has an angular velocity of 1.5 rad/s and an angular position of 2.3 rad. What is the angular position of the wheel at t = 2.0 s?
a. 4.9 rad b. 4.7 rad c. 4.5 rad d. 4.3 rad e. 4.1 rad
Two ropes are attached to a 50-kg object. The first rope applies a force of 35 N and the second, 55 N. If the two ropes are perpendicular to each other, what is the resultant acceleration of the object?
a. 1.3 m/s2 b. 35 m/s2 c. 1.8 m/s2 d. 65 m/s2 e. 0.77 m/s2