A metal string has negligible tension at 250 C. Calculate the tension in the string if it is brought outdoor at a temperature of -20.0 C. The radius of the string is 0.20 cm. Y= 19 x 10^10 Pa; coeff. of linear expansion is 12 x 10-6/ K

Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water

Should we celebrate the voyages of zheng he mini q answer key