Answer:
Technician B
Explanation:
There's no such thing as a perfect filter available to block any kind of toxic fumes. The effectiveness of a filter depends of various things, such as the air flow and the particles size. They have specific rates depending on the place they are designed to be installed on, so they have to be chosen with that in mind. For example, most industrial applications have more demanding restrinctions than a commercial one, so a filter designed for the latter would probably not be useful for the first case.
Answer:
6 J
Explanation:
Gravitational Potential Energy can be calculated using the formula:
PE = mgh
where m is mass of object in <em>k</em><em>g</em>
<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em>g is the gravitational acceleration of 10 m/s^2
h is the height at which object is thrown in <em>m</em><em>.</em>
Hence, by substituting in the values, we get:
GPE = (4.0)(10)(0.15)
<u>6</u><u> </u><u>J</u>
Hence, the potential energy is <u>6</u><u> </u><u>J</u><u>.</u>
B. electric and magnetic fields.
Explanation:
This is a wave diagram of an electromagnetic wave showing vibration of both electric and magnetic fields.
An electromagnetic wave is made up of electric and magnetic fields vibrating.
- These waves are deflected neither by electric fields nor magnetic fields.
- The electromagnetic field is made up of a broad range of radiations.
- Visible light is an electromagnetic radiation.
- The magnetic and electric fields are oriented perpendicularly and they are transverse waves.
Learn more:
Electromagnetic waves brainly.com/question/12450147
#learnwithBrainly
Answer:
Black holes are detected as surrounding material (like gas) is funnelled by the force of gravity into a disk around the black hole. The gas molecules in the disk swirl around the black hole so fast that they heat up and emit X-rays. These X-rays can be detected from Earth.
Explanation:
The answer is D. time really does pass more slowly in a rest frame of reference relative to a frame of reference that is moving