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Inga [223]
3 years ago
15

What is not an example of a mineral?a.gold b.mica c.steel d.quartz

Physics
2 answers:
vodka [1.7K]3 years ago
7 0

Answer:

C  steel

Explanation:

Leviafan [203]3 years ago
6 0

Answer:

C : Steel

Explanation:

Steel is manufactured and not made by the Earth itself

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A ball is falling from the sky down to the left. What two forces are being used?
suter [353]

Answer:

push and pull

Explanation:

i beleve good luck❤️❤️

4 0
2 years ago
Read 2 more answers
A bowling ball of mass 5 kg rolls down a slick ramp 20 meters long at a 30 degree angle to the horizontal. What is the work done
Elena-2011 [213]

Answer:

The work done by gravity during the roll is 490.6 J

Explanation:

The work (W) is:

W = F*d

<em>Where</em>:

F: is the force

d: is the displacement = 20 m

The force is equal to the weight (W) in the x component:

F = W_{x} = mgsin(\theta)

<em>Where:</em>

m: is the mass of the bowling ball = 5 kg

g: is the gravity = 9.81 m/s²    

θ: is the degree angle to the horizontal = 30°        

F = mgsin(\theta) = 5 kg*9.81 m/s^{2}*sin(30) = 24.53 N    

Now, we can find the work:

W = F*d = 24.53 N*20 m = 490.6 J      

Therefore, the work done by gravity during the roll is 490.6 J.

I hope it helps you!

6 0
3 years ago
Newton's first law of motion is sometimes called the law of _________.
Gre4nikov [31]
Newtons first law of motion is also known as the law of inertia
3 0
3 years ago
True or false. there would be no like in earth without the sun
alisha [4.7K]

hello!

True

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6 0
3 years ago
If a cars velocity is slowing down is it considered a positive or negative acceleration?
Natali [406]

Answer:

Negative

Explanation:

Observe that the object below moves in the positive direction with a changing velocity. An object which moves in the positive direction has a positive velocity. If the object is slowing down then its acceleration vector is directed in the opposite direction as its motion (in this case, a negative acceleration).

4 0
3 years ago
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