Hai quả cầu nhỏ mang điện tích q1 ; 42 đặt cách nhau 3 cm trong không khí thì lực hút tĩnh điện giữa chúng có độ lớn là 2.10 − 2 N. Điện tích tổng cộng của hai quả cầu là –10-8 C . Xác định điện tích q1; q2 của mỗi quả cầu ? Biết rằng |4, > 4,.

How would a small bar magnet be oriented when placed at position x?

Choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. a 1.0 kg block is placed on top of a 2.0 kg block. a horizontal rope pulls the 2.0 kg block across a frictionless floor with a force of 21.0 n. the coefficient between the two blocks is 0.75. does the 1.0 kg block on top slide?

Which two statements are true about a system? a system is a group of objects analyzed as one unit. energy that moves across system boundaries is conserved there's only one way to define the boundaries of a system all systems are made by humans