Iwill give brainliest, , and rate. answer quickly! i need what theory did heisenberg add to bohr's theory when he came up with his uncertainty principle? answer choices: a. electron theory b. cloud theory c. wave theory what was bohr's theory called that electrons were tiny substances racing around the nucleus? answer choices: a. wave theory b. particle theory c. cloud theory

Aspring with a mass of 2 kg has a damping constant 14 kg/s. a force of 3.6 n is required to keep the spring stretched 0.3 m beyond its natural length. the spring is stretched 0.6 m beyond its natural length and then released. find the position of the mass at any time t. (assume that movement to the right is the positive x-direction and the spring is attached to a wall at the left end.)

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.

A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.