<em>F</em> = 153 N
Explanation:
Let us define first our directional convention. Anything pointing up or to the right is considered positive and anything pointing down or to the left is considered negative. Now let's look at the components 
and 
:
= 350 N - 200 N = 150 N
= 180 N - 150 N = 30 N
The magnitude of the resultant force <em>F</em> is given by
To find the direction 
, we use
or
Answer:
Just like a chemical reaction.
Concave mirror is a type of mirror that is <u>used by dentists to clearly see images of our teeth because they form an erect and enlarged image of the teeth.
</u>
<h2>Further Explanation
</h2><h3>Concave mirrors
</h3>
- Concave mirrors are types of mirrors that curve inward at the optical center.
- They reflect light inward towards one focal point. They are used for various purposes depending on the type of image required and the position of the object from the mirror.
<h3>Uses of Concave mirrors
</h3><h3>Shaving and makeup mirrors </h3>
- When used for shaving and makeups the objects are placed close to concave mirror to form an upright magnified image.
- Concave mirror are held close to the face so as to form an enlarged and upright image of the face. Additionally, during shaving hair can be seen clearly to make sure all hairs has been cut to the same length.
<h3>Headlights
</h3>
- Concave mirrors may be used in motor vehicles headlights. These mirror focuses the light from the bulb instead of reflecting it, to create a strong beam which shines on the road.
<h3>Microscopes
</h3>
- Concave mirrors may be used in microscopes to collect light from its source and shine it towards the slide that contains the specimen to enhance viewing through magnifying lens.
<h3>Dentists
</h3>
- Concave mirrors are used by dentists so as to enlarge the image of the teeth. The mirror is placed closer to the tooth, resulting to the formation of an upright and enlarged image of the tooth.
Keywords: Concave mirrors, upright and enlarged image
<h3>Learn more about:
</h3>
Level: High school
Subject: Physics
Topic: Curved mirrors
Sub-topic: Concave mirrors
B. The sound wave will not be generated, so there will be no echoes received
<h3>What is ultrasound?</h3>
An ultrasound is the process of sending high-frequency sound waves to make an image of an internal structures of an object.
If the machine is broken and it is not sending out the sound wave, then it simply means that the sound wave will not be generated, so there will be no echoes received.
Thus, for an ultrasound tech that is trying to identify an object, but the machine is broken and is not sending out the sound wave.
The statement that best describes this situation is "The sound wave will not be generated, so there will be no echoes received".
Learn more about ultrasound here: brainly.com/question/22844181
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The foods that would be considered basic are
Tofu with Ph of 7.20
Egg white with a PH of 7.96
<em><u>Explanation</u></em>
- The PH of Basic food is above 7 in the PH scale.
- Tofu and egg white are basic food since they have a PH of above 7.
- Tomatoes, walnuts,apples, asparagus,blueberries,cranberry juice and concord grapes are acidic food since they have PH below 7.
