a truck with a mass of 3300 kg is driving down a highway at a speed of 10km/hr. The truck increases its speed up to 60km/hr. What is the difference in kinetic energy from the truck's initial speed of 10km/hr to its final speed of 60km/hr?

The ph is the a.independent variable b.the dependent variable c.control group

Using proper grammar, spelling, and punctuation, write at least one 5 sentence paragraph describing 3 ways we use the elements of the electromagnetic spectrum (ems) in our everyday lives.

Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.