A single fixed pulley can be used to raise or lower lightweight objects.
Option b
<u>Explanation:</u>
A pulley is a simple machine tool which is used to make lifting or lowering tasks easy. A single fixed pulley is a system involving only one pulley fixed on a constant rigid support with a rope wrapped around the wheel. Such a system can be used only to change the direction of applied force in raising or lowering small, lightweight objects which need minimal work force.
A single fixed pulley system helps only in redirecting the applied force direction by using a rope and wheel assembly. The work done in such a case remains the same and hence it is not preferred to use it in lifting heavy objects. Neither is the required force reduced in case of a single fixed pulley system. A movable pulley helps in achieving (A) and (C).
<span>C is the correct answer. Electron microscopes require a vacuum to work, so living cells cannot be seen because they cannot respire. Light microscopes use a ray of visible light instead of a beam of electrons to magnify something so it can be seen by the naked eye. There are two different types of electron microscope: transmission (TEM) and scanning (SEM).</span>
Answer:
Explanation:
Displacement involves direction and distance. In this case, the deer has walked a distance of 17 + 12 = 29m but because of the South-then-North direction, the net displacement is only 17-12 = 5m.
So the answer is A) 5.0 m, 29.0 m
A. The primary benefit of this process is each failed design provides more information for the next design.
<h3>What is design process for technology?</h3>
Design process for technology are the steps used to obtain a desired technological results.
Technological design process include:
- identify a problem,
- research the problem,
- generate possible solutions,
- select the best solution, create a model,
- test the model,
- refine and retest the model as needed,
- communicate the final solution.
During technological design process, a failed result can provide a greater insights for the next step necessary for the end goal.
Thus, the primary benefit of this process is each failed design provides more information for the next design.
Learn more about technological design process here: brainly.com/question/20162876
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