12-35 A cup is made of copper. The mass of the cup is 500 gm. Calculate
(a) the heat capacity of the cup, and
(b) the temperature to which the cup is
raised when 8.78 x 103 J of heat is
supplied to the cup. Specific heat of
copper is 390 J/kg. K and the cup is
initially at 20°C. [Answer = 195 J/K,
65°C]

Which energy transformation occurs in the core of a nuclear reactor? nuclear energy mechanical energy nuclear energy - thermal energy thermal energy -- nuclear energy mechanical energy - nuclear energy

The intensity of a polarized electromagnetic wave is 12 w/m^2. part a) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=0∘ with the plane of polarization? part b) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=30∘ with the plane of polarization? part c) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=45∘ with the plane of polarization? part d) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=60∘ with the plane of polarization? part e) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=90∘ with the plane of polarization?

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?