Scientists<span> use the </span>scientific method<span> to make testable explanations and predictions about the world. A </span>scientist<span> asks a question and develops an experiment, or set of experiments, to answer that question.
</span><span>Ask a QuestionDo Background ResearchConstruct a HypothesisTest Your Hypothesis by Doing an ExperimentAnalyze Your Data and Draw a ConclusionCommunicate Your Results</span>
Answer:
This is an open circuit
Explanation:
An open circuit I believe
It needs to be closed for the bulb to be turned on
Answer:
Special metal hangers or stirrups called joist hangers are used when joist must be flush with the bottom of the girder or beam.
Explanation:
- A joist hanger also known as a beam hanger is a mechanical device which is used to fasten joists and rafters.
- The rafters are the carried members to beams and headers are the carrying members.
Thus, special metal hangers or stirrups called joist hangers are used when joist must be flush with the bottom of the girder or beam.
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The speed of air at the intake area is 
(m/s).
<h3 /><h3>Continuity equation</h3>
The continuity equation is used to determine the flow rate at different sections of a pipe or fluid conduit.
The continuity equation is given as;
- Let the intake area = A₁
- Let the velocity of air in intake area = v₁
- Let the area of the test section = A₂
- Velocity of air in test section, v₂ = 10 m/s
The speed of air at the intake area is calculated as follows;
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