A wave with a frequency of 14 Hz has a wavelength of 4

Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.

What is the frequency if a wave that pases a given pount 22 times in 2 seconds

The velocity of sound wave in air at 35°c is 353m/s, calculate the velocity of sound at 46°c