9. The model of the universe that suggests that the sun is the center of the universe was first developed by

A. Copernicus

B. Brahe.

C. Kepler.

D. Ptolemy.

Weather patterns on earth may be ...

Which is a benefit related to abstaining from alcohol? decreased blood pressure increased medication interactions increased neurological problems decreased fertility Choose 2 answers.

The men's world record for swimming 1500.0 m in a long course pool (as of 2007) is 14 min 34.56 s. At this rate, how many seconds would it take to swim0.650miles (1 mi = 1609 m) ?

Explain the difference in reactivity of the elements based on their electron configurations.

The trans-Atlantic telegraph joined England and the United States by wire. a. True b. False

How much would a 100kg man weigh on the surface of the sun where the acceleration is 274 m/s

How much current is in a circuit that includes a 9 - volt battery and a bulb with a resistance of 12 ohms?

Find the current Voltage VD and current ID in the following circuit assuming (a) ideal diode. (b) Constant voltage drop model with Von = 0.75V (c) using the exponential model (I_0=1*10^ (-14)). Verify your results through Multisim simulation

Suppose two stars are located in region a of the h-r diagram shown in the figure below. Star X appears much dimmer that Star Y as seen from Earth. Which Star can be inferred to be nearer to Earth, and how do you know?

A student examining a joint observes collagen-rich connective tissue fibers linking the bones, but finds no synovial cavity. Which structural classification fits the observed joint?