Students used pieces of string to model the orbits of the inner planets. They measured the lengths of the strings and recorded the values in a table. Which table correctly shows the relationship between the positions of the planets and the relative lengths of their orbits? A)
Mercury : 25 CM
Venus: 25 CM
Earth: 25 CM
Mars: 25 CM
B)
Mercury : 25 CM
Venus: 22 CM
Earth: 18 CM
Mars: 15 CM
C)
Mercury : 15 CM
Venus: 22 CM
Earth: 18 CM
Mars: 25 CM
D)
Mercury : 15 CM
Venus: 18 CM
Earth: 22 CM
Mars: 25 CM

Study the following reaction carefully. what classification should this reaction have? 4al + 3o2 2al2o3synthesisdecompositionsingle replacementdouble displacement

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be