A 50.0-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.549 and 0.328, respectively. What horizontal pushing force is required to (a) just start the crate moving and (b) slide the crate across the dock at a
constant speed?

The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e

Given the data calculated in parts a, b, c, and d, determine the initial rate for a reaction that starts with 0.85 m of reagent a and 0.70 m of reagents b and c?