1. a diagram that shows the sun at the center of the solar system is known as a? a) geocentric model. b) heliocentric model. c) universe model. d) earth moon sun model. 2. why do the planets not travel in a straight path? . a) the forces of inertia and gravity cause them to move in a elliptical orbit around the earth. b) the forces of inertia cause the planets to move in curved paths around the sun. c) the forces of inertia cause the planets to move in curved paths around the sun. d) the forces of gravity and inertia combine to produced elliptical orbits around the sun. e) all of above.

You are given two vectors a⃗ =−3.00ι^ 5.00j^ and b⃗ =5.00ι^ 2.00j^. let the counterclockwise angles be positive.

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)