Tracy pushes a block up an inclined plane to a height of 1.0 m. If Tracy puts 475 J of work into the system, but only 450 J are used t

Question

Tracy pushes a block up an inclined plane to a height of 1.0 m.
If Tracy puts 475 J of work into the system, but only 450 J are used to elevate the block, what is the efficiency of the inclined plane?
A. 95%
B. 106%
c. 925)
OD 25 J

in progress 0
Lệ Thu 2 months 2021-07-30T04:33:34+00:00 1 Answers 1 views 0

Answers ( )

    0
    2021-07-30T04:34:49+00:00

    A=95%

    (450/475)*100=94.7% which rounds to 95%

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )