The figure shows a ‘snapshot’ of four different waves in identical ropes stretched with the same force
The waves with the largest amplitude are _________ and _________.
I and II
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What does this figure tell us?
A) The current level of carbon dioxide in our atmosphere is higher than it has been at any time during the past 800,000 years. B) Earth is now warmer than it has been at any time during the past 800,000 years. C) The current level of carbon dioxide in our atmosphere can be attributed to natural changes in Earth's climate. D) The level of carbon dioxide in our atmosphere changes randomly with time, so there is no way to predict how it will change during the next century. E) The current level of carbon dioxide in the atmosphere and the global average temperature are both higher today than at any other time during the past 800,000 years.
The south celestial pole appears on your meridian at an altitude of 30° in the south. Where are you?
A) latitude = 30°S B) latitude = 60°S C) latitude = 30°N D) latitude = 60°N E) the South Pole
Which of the following correctly lists the various parts of the electromagnetic spectrum in the correct order from lowest to highest energy.
A. infrared, ultraviolet, radio waves, gamma rays, visible B. gamma rays, infrared, ultraviolet, radio waves, visible C. radio waves, ultraviolet, visible, infrared, gamma rays D. gamma rays, ultraviolet, visible, infrared, radio waves E. radio waves, infrared, visible, ultraviolet, gamma rays
As a spaceship is moving toward Earth, an Earthling measures its length to be 325 m,
while the captain on board radios that her spaceship's length is 1150 m. (c = 3.00 × 108 m/s) (a) How fast is the rocket moving relative to Earth? (b) What is the TOTAL energy of a 75.0-kg crewman as measured by (i) the captain in the rocket and (ii) the Earthling?