Which statement best illustrates the role that gravity played in the formation of the solar system? Gravity allowed the nebula to expand and move outward.

Gravity caused the nebula to cool enough for planets to form.

Gravity removed excess gas and dust from the cores of the planets.

Gravity pulled particles of dust and gas together to form planets.

Give your knowledge of these things in your paper, you will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. you’ll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal in the space provided, write down what you already know about any of these features. if you’re not sure, write down questions you might have about the features.

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

How to tell if two objects are in thermal equilibrium 1.the objects have the same temperature 2.the objects are the same size 3.the objects are touching each other 4.the objects temperatures are changing