Hai quả cầu kim loại mang các điện tích lần lượt là q1 q2 cho tiếp xúc nhau. Sau đó tách chúng ra thì mỗi quả cầu mang điện tích gì

What are igneous intrusions and extrusions

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

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?