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Multiple Choice
A boy is pulling a load of 150N with a string inclined at an angle of
30° to the horizontal. If the tension in the string is 105 N, The force
tending to lift the load off the ground is (sin30=%,cos30=
13/2 and tan 30 = 1/13)
O (a)255N
O (b)202.5N
O (c)105/3/2N
O (e)52.5N

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.

the body's situation won't change the forces are equal opposit and on the same body

hello, i am papaguy.

i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!

unbalanced force

explanation: