Find the work done in moving an object along a vector r = 3i + 2j - 5k if applied force is f = 2i - j -k

The frequency of a given region of the electromagnetic spectrum ranges from 3 × 1016 − 3 × 1019 hertz. which type of wave is found in this region? a. x-rays b. ultraviolet rays c. infrared waves d. radio waves

Iron reacts with sulfur to form iron sulfide. if 60 grams of iron reacts with sulfur to produce 90 grams of iron sulfide, how much sulfur has been used in the chemical reaction?

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.