问题
选择题
下列物理量属于标量的是( )
A.速度
B.位移
C.功
D.电场强度
答案
位移、电场强度和速度都是即有大小又有方向,相加时遵循平行四边形定则的物理量,都是矢量,功是只有大小,没有方向的物理量,是标量,所以C是标量.
故选C.
下列物理量属于标量的是( )
A.速度
B.位移
C.功
D.电场强度
位移、电场强度和速度都是即有大小又有方向,相加时遵循平行四边形定则的物理量,都是矢量,功是只有大小,没有方向的物理量,是标量,所以C是标量.
故选C.
In 2005, Carpet Company decides to change from the straight-line method of depreciation to the sum of the year’ s digits method. The following information is available :
Pre-2005 | 2005 | |
Straight Line Depreciation | $ 1600000 | $ 400000 |
Sum of the Years Digits | $ 2300000 | $ 500000 |
A. $ 400000 depreciation expense in the 2005 income statement and $ 800000 separately as a change in accounting principle net of taxes.
B. $ 500000 depreciation expense in the 2005 income statement and $ 700000 separately as a change in accounting principle net of taxes.
C. $1200000 depreciation expense in the 2005 income statement and include a footnote of explanation including the tax effect.