A. the center of heavy portion
B. the bottom surface
C. the mid point of its axis
D. all of the above
E. none of the above
A. density of metal can’t be determined
B. metal is twice as dense as water
C. metal will float in water
D. metal is twice as dense as unknown fluid
E. none of the above
A. the floor is smooth, the wall is rough
B. the floor is rough, the wall is smooth
C. the floor and wall both are smooth surfaces
D. the floor and wall both are rough sur-faces
E. will be in equilibrium under all condi-tions
A. 25
B. 50
C. 100
D. 250
E. 500
A. three forces acting at a point will be in equilibrium
B. three forces acting at a point can be represented by a triangle, each side being proportional to force
C. if three forces acting upon a particle are represented in magnitude and
direction by the sides of a triangle, taken in order, they will be in equilibrium
D. if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two
E. none of the above
A. impact energy
B. resilience
C. proof resilience
D. modulus of resilience
E. toughness
A. malleability
B. ductility
C. plasticity
D. elasticity
E. reliability