Cho hai điện tích q1=q2=8.10^-7 C đặt cách nhau 5cm. Xác định cường độ điện trường tại điểm: a. Cách q1=2cm, q2=3cm
b. Cách q1=5cm, q2=10cm
c. Cách q1=5cm, q2=5cm
d. Cách q1=4cm, q2=3cm

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

Which statements describe the movement of ocean currents around the globe? check all that apply. strong winds force warm water to sink to the ocean floor. the coriolis effect causes warm and cold water to mix. cool dense water sinks to the ocean floor. warm water replaces cool surface water. wind blowing parallel to the shore causes upwelling of cool water.

Amother used 150 watts of power to raise a 15 newton object in a time interval of 8.0 seconds. through what vertical distance was the object raised ?