Question 2: Agas sample composed of three particles with kinetic energies as shown. At a temperature of 80°C,
the average kinetic energy of the particles is 0.04 ).
0.02
0.05]
temperature - 80°C
(a) Calculate the kinetic energy of particle 3 at a temperature of 80°C.
energy. mxcXAT
energy of particle 3
[2]
(b) Calculate the total internal energy of the gas at 80°C.
total internal energy
(2)
1

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Which statement correctly describes the relationship between frequency and wavelength?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.