Ablock of wood of mass 10kg and dimension 40cmx25cmx10cm is placed on a table top. find the pressure exerted if the box lies on the tabletop with sides of dimensions; a.10cmx25cm b.40cmx10cm

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

Ahair dryer is basically a duct in which a few layers of electric resistors are placed. a small fan pulls the air in and forces it through the resistors where it is heated. air enters a 1200 w hair dryer at 100 kpa and 22°c and leaves at 47°c. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.

How much energy will be transferred to your eardrum while listening to this sound for 1.0 min?