Problem: How would the universe look without gravity? It would have no planets and no stars. Thats how it looked when it was young. When the universe was young, there was only gas and dust. From this gas and dust, everything we now see was made. How were stars and planets created from just gas and dust? The answer is gravity. The same gravity that holds you down on Earth. The same force that causes your pencil to roll off your desk. The same force that causes it to fall to the floor. The invisible force of gravity caused dust and gas particles to be pulled together. This force is what formed all the objects in our solar system. This force formed the smallest moons. It also formed our Sun. This force caused more than just our solar system to form. It caused all the other solar systems to form. It caused the formation of all the galaxies of the universe.

Question: "What created the Sun and moon?"

Answer: "Gas and dust"
Answer: no

Problem: Rough surfaces create more friction than smooth surfaces. Thats why cars have tires. Its also why we use rubber mats in areas that might get wet. In your bathtub, you may even use No-Slip tape. No-slip is another way of saying the items has a lot of friction. In Figure 1.9, the blades of the skates are very smooth. Thats why you cant slide across ice with shoes. The soles of your shoes are much rougher than skates. The rougher surface of shoes causes more friction and slows you down. Heavier objects also have more friction. A heavy object presses down with more force. The surfaces are held together more tightly. This makes the surfaces harder to slide past each other. Did you ever try to push something heavy across the floor? Heavy objects are much harder to push than light objects.

Question: "Do ice skates provide much friction?"

Answer: "Yes"
Answer: no

Problem: His exile lasted nearly a year and a half. Long before that time there had come a reaction in his favour. The new consuls were well disposed towards him; Clodius's insolence had already disgusted Pompey; Caesar was absent with his legions in Gaul; his own friends, who had all along been active in his favour (though in his querulous mood he accused them of apathy) took advantage of the change, his generous rival Hortensius being amongst the most active; and all the frantic violence of Clodius and his party served only to delay for a while the return which they could not prevent. A motion for his recall was carried at last by an immense majority. Cicero had one remarkable ally on that occasion. On one of the days when the Senate was known to be discussing his recall, the 'Andromache' of Ennius was being played in the theatre. The popular actor Esop, whose name has come down to us in conjunction with that of Roscius, was playing the principal character. The great orator had been his pupil, and was evidently regarded by him as a personal friend. With all the force of his consummate art, he threw into Andromache's lament for her absent father his own feelings for Cicero. The words in the part were strikingly appropriate, and he did not hesitate to insert a phrase or two of his own when he came to speak of the man

Question: "How long did his exile last before a recall was carried by an immense majority?"

Answer: "Three years"
Answer:
no