Which of the following equations is balanced correctly? a. 3 h2o → h2 + 3 o2 b. cl2 + 2 kbr → kcl + br2 c. 2 c2h2 + 5 o2 → 4 co2 + 2 h2o d. 2 c3h3 + o2 → 2 co2 + h2o

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?

Four identical lab carts each have a mass of 200 kg. different masses are added to the carts and the velocities are measured. all carts move to the right.

The buildup of charges on an object is called