birinchichangmai200

A circular glass plate has a diameter of 350 mm (13.78 in) and athickness of 10 mm (0.394 in). The edge of the plate is clamped,and air at 258C (778F) is on both sides of the plate. Determine the transmission loss for the plate for a frequency of [A] 250 Hz and [B]1000 Hz.

What is 69+420?

An aquarium 5 m long, 3 m wide, and 2 m deep is full of water. Find the work needed to pump half of the water out of the aquarium. (Use the fact that the density of water is 1000 kg/m3, and use 9.8 m/s2 for g.)

An aquarium 2 m long, 1 m wide, and 1 m deep is full of water. Find the work needed to pump half of the water out of the aquarium. (Use the fact that the density of water is 1000 kg/m³, and use 9.8 m/s² for g.)
W = J

Can anyone help me with question 4 below. This is due in two hours so im in a rush. Please help me

If m ? f(x) ? M for a ? x ? b, where m is the absolute minimum and M is the absolute maximum of f on the interval [a, b]....

Use this property to estimate the value of the integral.