A341.3 hz tuning fork is resonating in a closed tube on a cool day. if the tube has a length of 0.24 m, then what is the speed of sound in this experiment? a) 328 m/s b) 340 m/s c) 343 m/s d) there is not enough information to tell.

Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?

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.

Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47