Asound wave has frequency of 430 hz in air . which of these is closet to the wavelength of this sound? ( the speed of sound in air is 343 m/s.) a. the height of a skyscraper b. the length of car c. the height of a tree d. the width of highway e. the height of a desk

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v

Which levels of government establish and implement educational requirements for minors

Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass