An object elongates from a length of 45 cm to a length of 55 cm. The percent strain is 41%

22%

122%

82%

18%

36%

Can anybody me with this? ? (picture included.)

An architect plans to use solar energy to heat the next house he designs. what principle of absorption and infrared energy can be applied to the design of the new house? how could she apply to those principals?

Explain why electric current cannot exist if a current doesn't have a voltage source.