• ## According to one theory, how did the earliest people come to the Americans? A-African tribesmen sailed large ships to the Caribbean Islands. B-Europeans traveled across a land mass that connected Europe and North America. C-Native Americans migrated to Asia and brought others with them when they returned. D-Southeast Asians sailed across the Pacific Ocean to North America.

Search Posted in History Please login to view the answer Login Join us Related Questions Posted in History The Pan-Africanism movement grew out of prior antislavery movements and from African associations. It fought for the African peoples and against all of the following EXCEPT: A. racism B. communism C. segregation D....

• ## Would you expect a carbon atom to have the same mass as an oxygen atom

Search Posted in Chemistry Please login to view the answer Login Join us Related Questions Posted in Chemistry Students in Dr. Lee’s class were conducting solubility experiments using sucrose and water. Students began with room temperature water (22oC) and then heated the water to boiling. They calculated the amount...

• ## In 2004 astronomers reported the discovery of a large Jupiter-sized planet orbiting very close to the star HD 179949 (hence the term “hot Jupiter”). The orbit was just 19 the distance of Mercury from our sun, and it takes the planet only 3.09 days to make one orbit (assumed to be circular). What is the mass of the star? Express your answer (a)in kilograms and (b)as a multiple of our sun’s mass.

1.  You can never prove a theory. All theories and laws and scientific knowledge in general is provisional. If your theory is inconsistent with an experiment (and you are sure the experiment is correct), your theory needs to be pitched or modified. 2.  change the meters to kilometers;  120 m/km = .12 km/km = .12  or...

• ## Which tools would be use to find an irregularly shaped object’s mass and volume?

Impulse is the change in momentum.All we need is the momentum before and after. Momentum  =  (mass) x (speed) Before:        =  (80 kg) x (4.7 m/s)  =  376 kg-m/s After:           =  (80 kg) x (3.4 m/s)  =  272 kg-m/s Change in momentum  =  (376 – 272) =