You discover an impact crater that is 10 kilometers across. Which of the following can you conclude?
A) It was created by the impact of an object about 1 kilometer across.
B) It was created by the impact of an object about 10 kilometers across.
C) It was created within the past 10 million years.
D) It was created within the past 1 billion years.
E) It was created by the impact of an object about 100 kilometers across.
A) It was created by the impact of an object about 1 kilometer across.
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A spaceship with a mass of 2.8 × 106 kg is traveling toward two asteroids, each with a mass of 5.0 × 1016 kg, which are 40 km apart. Its path is perpendicular to the line joining the asteroids and aimed at the midpoint of that line
What is the net gravitational force exerted by the asteroids on the spaceship when the spaceship is 30 km away from that midpoint? G = 6.67 x 10-11 N•m2/kg2. A) 12,000 N B) 8000 N C) 16,000 N D) 6200 N E) 18,000 N
Which of the following is an example of Heisenberg's uncertainty principle?
A) The unpredictability of radioactive decay. B) The unpredictability of a coin toss. C) Both of the above. D) The unpredictability of the weather. E) All of the above.
An atom having a single proton in its nucleus is a hydrogen atom
Indicate whether the statement is true or false
Most meteors come from pieces of comets
a. True b. False Indicate whether the statement is true or false