A student made the following observations about astronomical bodies.
Observation 1: Mars reverses its direction of motion in the night's sky.
Observation 2: The stars move across the sky.
Which observation(s) can be explained using the heliocentric model but not the geocentric model?
(A)Only observation 1
(B) Only observation 2
(C) Both observation 1 and observation 2
(D) Neither observation 1 nor observation 2
Answers: 2
Physics, 22.06.2019 09:00
Inside of a windmill or a dam is a that is used to transform one type of energy into electrical energy. a. motor b. generator c. transformer d. power pack
Answers: 2
Physics, 22.06.2019 12:50
Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i.e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i.e. include the distance traveled to the first encounter)
Answers: 2
Physics, 22.06.2019 15:20
Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?
Answers: 2
Physics, 22.06.2019 20:00
Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature
Answers: 1
A student made the following observations about astronomical bodies.
Observation 1: Mars reverses...
Mathematics, 02.02.2020 18:52
History, 02.02.2020 18:52
Mathematics, 02.02.2020 18:52
Geography, 02.02.2020 18:52
Mathematics, 02.02.2020 18:52
Biology, 02.02.2020 18:52
Mathematics, 02.02.2020 18:52
Social Studies, 02.02.2020 18:52
World Languages, 02.02.2020 18:52
Biology, 02.02.2020 18:52