Answer:
18 000 m/ s
Explanation:
speed = wavelength * frequency
speed = 1.2 * 15 000 = 18 000 m/s
The fundamental force underlying all chemical reactions is D) electrical
The gravitational force on the car is the force popularly known
as the car's "weight". Its magnitude is
(9.8 m/s²) times (the car's mass, in kilograms) .
The unit of this quantity is [newton] .
Point of reference - an indicator that orients you generally; "it is used as a reference for comparing the heating and the electrical energy involved"
