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Yuri [45]
3 years ago
10

Please help me choose which one the correct answer is.

Physics
1 answer:
earnstyle [38]3 years ago
6 0

Answer:more than g I’m 99.9 % sure of it bc if you just drop the ball versus throwing the ball downward which is faster , throwing the ball downward so more than g hope this helps

Explanation:

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Suppose you were asked to demonstrate electromagnetic induction. Which of the following situations will result in an electric cu
steposvetlana [31]
D. All of the above. When a wire loop is moved or rotated in a magnetic field, there is a change in magnetic flux which produces emf in wire loop and hence electric current is produced. 
5 0
3 years ago
Read 2 more answers
Whar are the phenotypes for FF Ff ff
Bezzdna [24]

Answer:

F, F, f (if I'm understanding the question correctly)

Explanation:

Phenotypes are the physical trait shown. In FF, Ff, ff a capital letter means that the gene is dominant and therefore always shows when paired with either another of itself or a recessive (lowercase). So, for FF, you see F as the phenotype shown, and for Ff, you see F as the phenotype because F is dominant over the recessive f. In ff, however, since you have two recessives, only then can you see f as the phenotype because you have no dominant traits.

5 0
3 years ago
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Which best describes the image of a concave mirror when
mr_godi [17]

Answer:

when the object goes from the focal length to twice the focal length the image goes from infinity to twice the focal length, this image is real and inverted

Explanation:

Let's use the constructor equation to describe the image of a concave mirror

    1 / f = 1 / p + 1q

where f is the focal length, p and q the distance to the object and the image, respectively

     1 /q = 1/f - 1/p

tell us that the image is between the focal and twice the focal, let's calculate the position of the image

for both ends

case 1, distance to the object       p = f

     

       1 / q = 1 / f -1 / f

       1 / q = 0

       q = ∞

    the image is in infinity

case2, distance to object p = 2f

     1 / q = 1 / f - 1 / 2f

     1 / q = 1 / 2f

     q = 2f

the image is twice the focal length, the object and the image are at the same point

therefore the image when the object goes from the focal length to twice the focal length the image goes from infinity to twice the focal length, this image is real and inverted

5 0
3 years ago
9) If, after viewing a specimen at low power, you switch to high-dry power and, after using fine focus, cannot find the specimen
xeze [42]

Answer:

See the answer below

Explanation:

<em>The best thing one can do in this case would be to return the microscope's objective to low power and then </em><em>re-center the specimen </em><em>before switching back to high-dry power.</em>

Most of the time, <u>what makes the specimen under the microscope to be out of focus at higher objective powers after being in focus at low power is because they are not properly centered on the stage</u>.  Hence, before calling on the instructor, it would be wise to first return to low power, re-center the specimen and bring it into focus after which the high power objective can be returned to and the fine focus adjusted to bring the image back to focus.

After doing the above and the specimen still does not come into focus, then the instructor can be called upon.

4 0
3 years ago
The Moon is about 3.8 ✕ 108 m from Earth. Traveling at the speed of light, 3.0 ✕ 108 m/s, how long does it take a laser beam to
lana66690 [7]
Hello

1) The total distance the light has to cover to go from Earth to the Moon and back is twice the distance between the Earth and the Moon:
S=2d=2\cdot 3.8 \cdot 10^8~m =7.6 \cdot 10^8~m

2) Given the relationship
v= \frac{S}{t}
where v=3\cdot10^8~m/s is the speed of light, S the total distance covered calculate at point 1), and t the time, we can find the time the light needs to go from Earth to the Moon and back again:
t= \frac{S}{v}= \frac{7.6\cdot10^8 m}{3\cdot10^8~m/s}=2.53~s
4 0
3 years ago
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