Hilary Clinton flies from Los Angeles to Chicago and stopped in Denver. If the plane went 2200 km in 3 houx
to Denver, rested for 2 hours in Denver and then 1400
km in 3 hours to Chicago. What is the average speed of
Hilary?
A. 450 km/hr
B. 467 km/hr
C. 600 km hr
D. 733 km/hr

Contrast the force of gravity between these pairs of objects a 1 kg mass and a 2 kg mass that are 1 m apart and two 2 kg masses that are 1 m apart

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.

Scientist have use computer models to create a series of maps that show how susceptible coastal cities in island countries are to the sea rising at different levels.the map shows that a 1 meter rise would swap cities all along the us eastern seaboard. a 6-meter sea level rise with sub merge a large part of florida. thermal expansion has already raise the oceans 10 to 20 centimeters the most likely cause,directly and indirectly, for such a rise in sea level is