الإجهاد المحوري المقابل للحمل الحرج للانبعاج لعينة من الحديد مقطعها على شكل مستطيل (0.04m*0.03m ) مثبتة بمفصل عند كل نهاية و معرضة لقوة ضغط محوري اذا علمت أن طولها 2.5m وE= 200 Gpa

An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)

At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.

Burgers vector is generally parallel to the dislocation line. a)-true b)-false