【单选题】【单选】The tension on an anchor cable increases so that angle of the catenary to the seabed at the anchor reaches 10°. How will this affect the anchor in sandy soil?
【单选题】A 20-g bead is attached to a light 120-cm-long string. This bead moves in a horizontal circle with a constant speed of 1.5 m/s. What is the tension in the string if the angle α is measured to be 25°? ...
【简答题】A mild steel sample of 2mm in thickness and 10 mm inwidth is under biaxial tension, the tension force at both direction is 30kgf, assume the poisson's ratio ν=0.25, what is the value of coefficient o...
【单选题】In the 17th century, Otto von Güricke, a physicist in Magdeburg, fitted two hollow bronze hemispheres together and removed the air from the resulting sphere with a pump. Two eight-horse teams could no...