Galileo Galilei
A) developed a theory of gravity to explain the motions of the planets
B) obtained the first observational evidence suggesting the Earth moved about the Sun
C) showed that the orbits of the planets were ellipses and not circles
D) made detailed measurements of the motions of the planets in the sky
B
You might also like to view...
Standing Sound Waves: The lowest tone to resonate in pipe of length L that is open at both ends is 200 Hz. Which one of the following frequencies will not resonate in the same pipe?
A. 200 Hz B. 400 Hz C. 600 Hz D. 800 Hz E. 900 Hz
According to Einstein, increasing the brightness of a beam of light without changing its color will increase:
a. the number of photons. b. the energy of each photon. c. the speed of the photons. d. the frequency of the photons.
Size of the Nucleus: The radius R of a nucleus of mass number A is given by R = R0 A1/3, where R0 = 1.2 × 10-15 m, calculate the density of a nucleus that has contains 57 protons and 82 neutrons. The mass of a nucleon (proton or neutron) is 1.67 × 10-27 kg.
Fill in the blank(s) with the appropriate word(s).
As the velocity of your spaceship increases, you would observe
A) that your precision clock runs slower than normal. B) that the length of your spaceship has decreased. C) that your mass has increased. D) all of the given answers E) none of the given answers