If energy is transferred spontaneously as heat from a substance with a temperature of T1 to a substance with a temperature of T2, which of the following statements must be true? 1-T1 < T2

2-T1 = T2

3-T1 > T2

4-more information is needed

The statement must be true.

Explanation:

As it is given that heat is being transferred from a substance with temperature to a substance with temperature .

It is known that heat will always being transferred from a higher temperature to a lower temperature. Because at higher temperature the molecules of a substance acquire more energy and when they lose energy then a decrease in temperature occurs.

Hence, in the given situation .

Thus, we can conclude that the statement must be true.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2