The components of vector A⃗ are Ax = +2.7 and Ay = -6.2 , and the components of vector B⃗ are given are Bx = -7.9 and By = -9.1. What is the magnitude of the vector B⃗ - A⃗ ?

Acylindrical specimen of a nickel alloy having an elastic modulus of 207 gpa (30 × 106psi) and an original diameter of 10.2 mm (0.40 in.) experiences only elastic deformation when a tensile load of 8900 n (2000 lbf) is applied. compute the maximum length of the specimen before deformation if the maximum allowable elongation is 0.25 mm (0.010 in.)

Matter that emits no light at any wavelength is called

Which statement best describes the direction of the buoyant force on any object? a. opposite the force of gravity b. in the same direction as the weight c. in the direction of motion of the object d. opposite the direction of motion of the object