Ablacksmith heats a 35 g lump of iron from room temperature until it glows (2425 degrees c) to work it. if the specific heat of iron is 0.450 j/g degrees c, how much thermal energy has it gained?

37.9 kJ

Explanation:

We can calculate the thermal energy gained by the iron using the formula:

where

m = 35 g is the mass of the iron

Cs = 0.450 j/g is the iron's specific heat capacity

is the change in temperature of the iron (assuming that the room's temperature is 20 C degrees)

Substituting numbers into the formula, we find

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )