Please help A proton with velocity 7.0 x 10^5m/s collides elastically with a second proton that is stationary. One of the protons moves away at an angle of 45 degrees. Find the angle of the second proton as well as their final velocities after the collision. (Hint: KE = 1/2 mv^2 is not a vettor, Elastic collisions have conservation of momentum and Kinetic energy). Remember this is a system of three equations solve the system. ​

If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10

What are the applications of electromagnetic waves

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.