Which ancient philosopher proposed a heliocentric model of the solar system?

A. Kepler

B. Aristarchus

C. Plato

D. Ptolemy

Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the distance separating objects 1 and 2 is changed to one - halved the original value (i. e, halved), then the new electrostatic force will be

Why is the Earth's surface warmer than the surface of other planets, like Mars? a. The Earth's atmosphere releases heat. b. The Earth's surface receives less energy from the sun's rays. c. The Earth's rotation transfers energy more evenly. d.

What is the relationship between the speed of light and the index of refraction of a transparent substance?

Can something have energy without having momentum? explain. can something have momentum without having energy? defend your answer

1. Why is it important to accurately predict possible formation and path of a hurricane? 2. How does the sea temperature affect hurricane formation? 3. How does the amount of humidity affect hurricane formation? 4.

Hich of the following needs is an addition to Maslow's original hierarchy and only appears in the eight-stage revised model

Which of the following types of boundaries is most likely to result in a subduction zone? a. divergent b. convergent c. transform d. all of the above

in 1 second, 2.68x10^16 Na ions arrived at the negative electrode and 3.92x10^16 Cl - ions arrive at the positive electrode what is the current passing through the electrodes?

All of the following involve waves of electromagnetic energy except A. watching videos on a computer screen B. radios receiving signals through air C. the rumble of thunder during a storm D. sunlight shining on a plant leaf

An unknown fluid has a specific gravity of 0.750. What is the volume of 22.5 kg of this fluid? A. 10 L B. 20 L C. 30 L D. 40 L