Which of the options is the best definition of a vector?

a. a specific type of imaginary number
b. a quantity with both magnitude and direction
c. a magnitude described as a number
d. the magnitude of a value

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

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

An electric clothes dryer has a resistance of 8 ohms. it draws 30 a of current. what is the voltage, in volts, of the wall outlet that it is plugged into?