Ronaldo runs across a soccer field, moving 10 meters north, then 8 meters west, then 4 meters south. His displacement would be:

Sara is creating an experiment. her hypothesis states the following. if i increase the air in my tires, then i will get better gas mileage. if this is her hypothesis what column titles do we need in our date table? a. air pressure in tire (psi) and gas mileage (mph) b. air pressure in the atmosphere (psi) and gas mileage (mph) c. miles (m) and gallons per mile (g) d. old battery and new battery

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?