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labwork [276]
3 years ago
9

To which category does galaxy #1 belong? Why does it belong in this category?

Physics
1 answer:
vodka [1.7K]3 years ago
5 0

Answer:

This galaxy belongs to the elliptical galaxy category. This is because it does not have spiral arms.

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Suppose a scientist made this model.what info did the scientist need to know in order to make the model
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Suppose I wanted to answer this question about the model.
What info about the model would I need to know in order to
make any intelligent guess about the model ?

Hint: 
It would really help if I could SEE the model, or at least a photo of it.

4 0
4 years ago
Which part of the following graph shows the object going at the fastest speed?
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4 0
3 years ago
Driving 30.7 m/s in your car you see a dog up ahead and slam on your brakes. You stop just before hitting the dog after skidding
Nitella [24]

Answer: 2.74

Explanation:

We can solve this problem using the stopping distance formula:

d=\frac{(V_{o})^{2}}{2 \mu g}

Where:

d=132.1 m is the distance traveled by the car before it stops

V_{o}=30.7 m/s is the car's initial velocity

\mu is the coefficient of friction between the road and the tires

g=9.8 m/s^{2} is the acceleration due gravity

Isolating \mu:

\mu=\frac{2dg}{(V_{o})^{2}}

Solving:

\mu=\frac{2(132.1 m)(9.8 m/s^{2})}{(30.7 m/s)^{2}}

\mu=2.74 This is the coefficient of friction

7 0
3 years ago
An 3-kg object is dropped from a height of 5 m. The rock has an impact speed<br><br> of
Andrews [41]

Answer:

The rock has an impact speed  of 9.9 m/s.

Explanation:

given information:

object's mass, m = 3 kg

height, h = 5 m

in this case, the potential energy is equal to the kinetic energy

PE = KE

mgh = \frac{1}{2} mv²

where

m = mass (kg)

g = gravitational constant (9.8 m/s²)

v = velocity (m/s)

so,

mgh = \frac{1}{2} mv²

gh = \frac{1}{2} v²

v² = 2gh

v = √2gh

  = √(2)(9.8)(5)

  = 9.9 m/s

6 0
4 years ago
Which of the following is a result of reduced levels of red blood cells and elevated levels of white blood cells in the body?
marishachu [46]
There are no following but less red blood cells would make you tired because you can carry as much oxygen and more white blood cells could cause infection if the start attacking you. It could also give you bone marrow cancer if there are too many white blood cells.
4 0
3 years ago
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