He specific heat of aluminum is 0.9 j/g k. the specific heat of copper is 0.39 j/g k. if samples of equal mass of both aluminum and copper are heated up to 100°c and then dropped in a cold water bath. compare the heat lost by the two samples.
a) there is not enough information to conclude anything.
b) the copper loses a little more than twice the heat of the aluminum.
c) the aluminum loses a little more than twice the heat of the copper.
d) the heat lost is the same because the temperature change is the same.

M1 = 2.8 kg, m2 = 6.72 kg, m3 = 11.2 kg, byas in .is ,is .toof m3 it 0.91 m. (in m/s)

Which of the following is another term for a planned economy

Sally turns on her cellular telephone to speak to her friend who is located thousands of miles away. which of the following best describes how such a telephone is able to transmit and receive information? a. the cellular telephone transmits, receives, and encodes information using only sound waves. b. the cellular telephone transmits, receives, and encodes information using only electromagnetic waves. c. the cellular telephone transmits information by electromagnetic waves to a receiver which then encodes them and produces sound. d. the cellular telephone transmits information by sound waves to a receiver which then encodes them and produces electromagnetic waves.