把0.07扩大1000倍是____.
把0.7缩小1000倍是____.
—Did you get up late this morning?
—Yes, so after______quick breakfast, I had to run to office
如图所示,一电子以速度v0从A点沿着方向竖直向上、场强为E的匀强电场电场线运动到B点,到达B点时速度恰好为零.已知电子电量为﹣e,质量为m,不计电子的重力,求A,B两点间的电势差和AB间距离.
I don’t quite understand what you said. Would you please give us ______example?