Calculate the mean free path of a sputtered atom in an ar glow discharge at 10 mtorr pressure. if the cathode-to-substrate spacing is 5cm, how many gas-phase collisions is a sputtered atom likely to encounter as it traverses this distance? kt / (21/2.d2-p), where d is the collision diameter of the molecule: -0.4nm for most molecules and a has cm unit

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c.the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors