Find an expression for σ33 such that the stress matrix satisfies the equations of equilibrium in the presence of body force vector b = −ge3 , where g is a constant.

Figure 9 on page 362 shows various motions of balls. the curved path followed by the yellow ball in b in picture b is result of a) inertia b) centripetal motion c) gravity and horizontal velocity d) linear motion

"an open tank has the shape of a right circular cone. the tank is 6 feet across the top and 5 feet high. how much work is done in emptying the tank by pumping the water over the top edge? note: the density of water is 62.4 lbs per cubic foot."

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest