A projectile is fired at v 0 = 394.0 m/s v0=394.0 m/s at an angle of θ = 70.5 ∘ θ=70.5∘ , with respect to the horizontal. Assume that air friction will shorten the range by 28.1 % 28.1% . How far will the projectile travel in the horizontal direction, R R ?

Copper has free electrons per cubic meter. a 71.0-cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 a of current. (a) how much time does it take for an electron to travel the length of the wire? (b) repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) generally speaking, how does changing the diameter of a wire that carries a given amount of current affect the drift velocity of the electrons in the wire?

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

Acompound machine is also called a machine. a. force b. simple c. complex d. directional