At the first earth outpost on mars, a visitor from earth throws a 4.721 kg ball vertically into the air with a force of 0.0782 kn. what is the acceleration of the rock in m/s^2? note: the local gravimetric acceleration on mars is 3.7219 m/s^2.

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Fluids at rest possess no flow energy. a)- true b)- false

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?