You have a frustrating day and just feel like screaming; you grab a pillow to scream into. which interaction of sound would take place here (refraction, reflection, and absorption) ,and how did the sound waves move?

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

Asmall grinding wheel has a moment of inertia of 4.0×10−5 kg⋅m2 . what net torque must be applied to the wheel for its angular acceleration to be 150 rad/s2 ?