The timbre of an instrument or voice is determined by

On a straight road, a truck moves at constant speed 41.1 km/hr and a car moves at constant speed 138 km/hr. at time t = 0, the car is 6.9 km behind the truck. at what time, in minutes, will the car pull alongside the truck?

sound wave of frequency 640 Hz travels 8oom in 2.5 s. calculate: (a) speed of sound (b) wavelength of sound wave

Your 2.4kg physics book lies on a shelf which is 1.5 meters off the ground. defining zero to be the ground level. how much gravitational potential energy does the book have in joules?

Your team of test engineers is to release the parking brake so an 768.0-kg car will roll down a very long 6.1 percent grade in preparation for a crash test at the bottom of the incline. (On a 6.1 percent grade the change in altitude is 6.

A spring stores 68 j of potential energy when it is stretched by 6 cm

A unit vector is used in the symbolic representation of the electric field. What physical units does the unit vector have? meters. The unit vector has no units. coulombs. The units depend on how it is used.

What's the definition of streak

The organization of notes into regular groups results in A. some notes sounding more prominent than others. B. all notes lasting for the same amount of time. C. patterns of long and short notes. D. a steady beat.

Sara is sitting in the back seat as her father drives at a constant speed. If Sara's father presses on the brakes quickly slowing the car down, what slows Sara down? A. air resistance on the inside of the car B.

A box of books has lessequalmore inertia than a box of cotton balls.