From Kepler's ________ law, we conclude that the planets do not move with constant speed.
A. First
B. Second
C. Third
D. Fourth
Answer: B
You might also like to view...
Modern observations have shown that the geometry of the Universe is ____
a. flat, and the Universe must be infinite b. flat, and the Universe must not be infinite c. open, and the Universe must be infinite d. closed, and the Universe must be infinite e. closed, and the Universe must not be infinite
Which of the following indicates that past conditions on Mars may have been suitable for life?
A) There are very large extinct volcanoes on Mars. B) Mars has two small Moons, Phobos, and Deimos. C) There are dried up riverbeds, rock-strewn floodplains, and minerals that form in water. D) Mars has polar caps. E) Mars has been studied by numerous spacecraft, including both orbiters and landers.
Which experiences the least electrical force in an electric field?
A) alpha particle B) beta particle C) electron D) gamma ray E) all the same
A 1200-kg car is being raised at a constant speed by a crane, using a 20-m long steel cable, 1.50 cm in diameter. Young's modulus for steel is 20 × 1010 N/m2. What is the change in length of the cable?
A) 6.7 mm B) 6.7 cm C) 3.3 mm D) 3.3 cm E) 3.3 m