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Masja [62]
4 years ago
14

Use the equation d = m/v [stack fraction), where d= density, m= mass, and v

Physics
1 answer:
sladkih [1.3K]4 years ago
5 0

Answer:

54.

Explanation:

6 (v) x 9 (m) = 54.

54 (m) / 6 (v) = 9 (d)

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Can someone please help me. idk what to do​
Alex_Xolod [135]

Answer:

-4.5 m/s

Explanation:

Even without doing calculations, we know that a projectile has the same speed coming down as it did going up at the same height.  Since it went up at 4.5 m/s, it returns down at -4.5 m/s.

To prove it with math, use the given information:

v₀ = 4.5 m/s

a = -9.8 m/s²

Δy = 0 m

Find: v

v² = v₀² + 2aΔy

v² = (4.5 m/s)² + 2 (-9.8 m/s²) (0 m)

v = -4.5 m/s

3 0
4 years ago
Herpetology is the study of what?<br> Birds,<br> Exotic animals, <br> Zoo habitats, Reptiles
Diano4ka-milaya [45]

Answer:

Herpetology is the branch of zoology concerned with reptiles and amphibians.

5 0
3 years ago
You are on a train that is traveling at 3.0 m/s along a level straight track. Very near and parallel to the track is a wall that
loris [4]

Questions Diagram is attached below

Answer:

T=2.08s

Explanation:

From the question we are told that:

Speed of Train V=3.0m.s

Angle \theta=12\textdegree

Height of window h_w=0.90m

Width of window w_w=2.0m

The Horizontal distance between B and A from Trigonometric Laws is mathematically given by

 b=\frac{0.9}{tan12}

 b=4.23

Therefore

Distance from A-A

 d_a=2.0+4.23

 d_a=6.23

Therefore

Time Required to travel trough d is mathematically given as

 T=\frac{d_a}{v}

 T=\frac{6.23}{3}

 T=2.08s

5 0
3 years ago
Why does a ship need an anchor
Len [333]

So there is extra wait that pulls the boat to stop.

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5 0
3 years ago
Read 2 more answers
Part of the eye which controls the entering of light is called __________
uranmaximum [27]

Answer:

Pupil

Explanation:

Part of the eye which controls the entering of light is called Pupil

6 0
2 years ago
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