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Tanya [424]
3 years ago
6

Magnesium chloride forms crystals. Which option is a description of this

Physics
2 answers:
shtirl [24]3 years ago
4 0
The answer is B. This form of magnesium chloride is not a liquid but a solid that is white and colorless.
telo118 [61]3 years ago
3 0

Answer:

B) A solid made up of a highly organized set of particles

Explanation:

A.P.E.X

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How does Kepler's first law refine the Copernican model?
AnnZ [28]
Copernicus's model states that the sun is in the center, and that the planets move around it in a circle. Kepler's first law of planetary motion says that they move around the sun in an ellipse.
8 0
3 years ago
As you stand by the side of the road, a car approaches you at a constant speed, sounding its horn, and you hear a frequency of 8
kap26 [50]

Answer: velocity of the car is 113.33m/s

Explanation:

From Doppler effect,

in the case which the source is moving towards the observer at rest

f2 = v/(v-vs) *f1

where f2 is the final observed frequency

f1 is the initial observed frequency

v = 340m/s (speed of sound in air)

vs = velocity of the source of sound.

rearranging the above equation

f2*(v - vs) = f1* v

vs = (f1* v/f2) - v

but f1 = 80Hz

f2 = 60Hz

v = 340m/s

substituting,

vs = (80 x 340)/60 - 340

vs = 453.33 - 340

vs = 113.33m/s

velocity of the car is 113.33m/s

5 0
3 years ago
Please Awnser soon water's state of matters include stream, liquid water, and ice. what about water is the same in these states?
yulyashka [42]
Well the similarity is that even though they are in a different state of matter they still come from the same substance: h2o 
7 0
4 years ago
The plain flight covers 400 miles in the first hour. As you approach the landing site, it takes you an hour to cover the last 20
tatyana61 [14]

that is an example of negative acceleration because it is slowing down

3 0
3 years ago
A lion accelerates from 1.5 m/s to 1.0 m/s in 18.4 s. How far does the lion run during this time?
Lesechka [4]

Answer:

23 m

Explanation:

If acceleration is uniform then

distance = ( average velocity ) × time

              = ( (initial velocity +final velocity )/2 ) × time

              = (( 1.5 + 1.0) /2 ) × 18.4

              = ( 2.5/2 ) × 18.4

              = 1.25× 18.4

              =  23 m  

6 0
3 years ago
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