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Alexeev081 [22]
3 years ago
7

Terry says that if an object has no acceleration, then no forces are exerted on it. Sherry doesn't agree, but can't provide an e

xplanation. They both look at you. What do you say?
Physics
2 answers:
crimeas [40]3 years ago
5 0
I say "Terry is correct." and "Stop looking at me !" .
Free_Kalibri [48]3 years ago
3 0
According to Newton's second law of motion,
                                 Fnet = m x a
The net force is the product of the object's mass and acceleration. If the acceleration is zero, then it is not true that no force is exerted on it. Instead, the force cancels out such that their net force is zero. 
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I believe the answer is B: UV
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Question 2 (1 point)
eduard

Answer: Blake may have a decreased chance of disease.

Explanation:

Research has shown that on average, a person who engages in more physical activity will live longer than a person who does not with one reason for this being that engaging in physical activity helps reduce the risk of diseases such as; heart disease, diabetes, and many forms of cancer.

Obesity (risk factor) and high blood pressure are also reduced by engaging in physical activity.

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Why does a magnet attract a steel nail
SVEN [57.7K]

Answer:

The nail will stick to the bar magnet because it will become magnetized, and it's metal. The presence of the nearby north pole rearranges the magnetic domains inside the steel so that their south poles all point toward the north pole of the permanent magnet. As a result, the other end of the nail becomes a north pole.Magnets attract iron due to the influence of their magnetic field upon the iron. ... When exposed to the magnetic field, the atoms begin to align their electrons with the flow of the magnetic field, which makes the iron magnetized as well. This, in turn, creates an attraction between the two magnetized objects.

7 0
3 years ago
A car moving at a speed of 20m/s has a kinetic energy of 300,000 J what’s the cars mass
Alexxx [7]

Answer:

<h2>1500 kg</h2>

Explanation:

The mass of the car can be found by using the formula

m =  \frac{2k}{ {v}^{2} }  \\

From the question we have

m =  \frac{2 \times 300000}{ {20}^{2} }  =  \frac{600000}{400}  =  \frac{6000}{4}  \\

We have the final answer as

<h3>1500 kg</h3>

Hope this helps you

7 0
3 years ago
Categorize each ray tracing statement as relating to ray 1, ray 2, or ray 3.
Sliva [168]

Answer:

statement 1 with answer C

statement 2 with answer F

statement 3 with answer B

Statement 1 with E

Statement 2 with A

Statement 3 with D

Explanation:

In this exercise you are asked to relate each with the answers

In general, in the optics diagram,

* Ray 1 is a horizontal ray that after stopping by the optical system goes to the focal point

* Ray 2 is a ray that passes through the intercept point between the optical axis and the system and does not deviate

* Ray 3 is a ray that passes through the focal length and after passing the optical system, it comes out horizontally.

With these statements, let's review the answers

statement 1 with answer C

statement 2 with answer F

statement 3 with answer B

Statement 1 with E

Statement 2 with A

Statement 3 with D

7 0
3 years ago
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