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.

A seafloor plate slides under a continental plate during subduction. which type of plate boundary best describes this situation

Waning gibbous meaning?

Which scenario would result in a positive population growth? Use this formula: population growth = (birth rate + immigration) - (death rate + emigration) A.

Jake has noticed his best friend Alison cheating at chess several times this week. If she gets caught, she will be kicked off the chess team, of which she is the president. What should Jake do?

Cuáles son las funciones psiquicas del ser humano?

What is the upward force of the floor on the toes of one foot?

What is the difference between nuclear energy and light energy?

Two stars, x and y, have the same temperature. star x is ten times more luminous than star y. which star has the larger radius

If the weight of an object of mass "m" is "mg," then the weight of an object of mass "2m" is A. mg/2 B. mg C. 2mg D. 4mg

In an old house, the heating system uses radiators, which are hollow metal devices through which hot water or steam circulates. In one room the radiator has a dark color (emissitivity = 0.830). It has a temperature of 64.1 oC.