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A crane is attached to one end of a steel girder, and lifts that end into the air. When the cable attached to the end of the girder is at 20 degrees to the vertical, the tension is 6.5kN. Calculate the horizontal and vertical components of this force.

6.1kN vertically up

2.2kN horizontally to the right

AR
Answered by Alex R. Physics tutor
3155 Views

What is the difference between a Scalar and a Vector?

A vector is any physical quantity which has a direction and a magnitude, whereas a scalar is a physical quantity that is not directional (magnitude only).

AR
Answered by Alex R. Physics tutor
1875 Views

Why should we not overprescribe and overuse antibiotics?

Antibiotics are used for killing bacteria and therefore, it can act as a selection pressure. This means that the bacteria can mutate, in order to avoid being killed and this would be a favourable mutation...

NR
Answered by Niva R. Biology tutor
3210 Views

How do I find the inverse of a 3x3 matrix?

We start by finding the determinant of this matrix using the cofactor method (I.e for each entry in the matrix, cross out the row and column in which it resides and find the determinant of the matrix form...

RR
4215 Views

Mutations leads to the production of a non-functional protein. Explain why.

  1. Mutations changes triplets/codons after that point and causes a frame shift

  2. Changes amino acid sequence after this as it codes for different amino acids 

  3. Affe...

CH
Answered by Carmen H. Biology tutor
13838 Views

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