How much heat energy is used to raise 3.4 kg of an object from a temperature of 15 degree celsius to 32 degree celsius if it has a specific heat capacity of 380 J/kgK

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.