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Zanzabum
4 years ago
12

Which state of matter is made up of atoms and molecules that are held closely together by the attractive forces between them?

Physics
1 answer:
oee [108]4 years ago
5 0
I'm not completely sure, but I believe the answer is B. Solid
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We wrap a light, nonstretching cable around a 10.0 kg kg solid cylinder with diameter of 38.0 cm cm . The cylinder rotates with
amm1812

Answer: 14.16

Explanation:

Given

d = 38cm

r = d/2 = 38/2 = 19cm = 0.19m

K.E = 510J

m = 10kg

I = 1/2mr²

I = 1/2*10*0.19²

I = 0.18kgm²

When it has 510J of Kinetic Energy then,

510J = 1/2Iω²

ω² = 1020/I

ω² = 1020/0.18

ω² = 5666.67

ω = √5666.67 = 75.28 rad/s

Velocity is the block, v = ωr

V = 75.28 * 0.19

V = 14.30m/s

The "effective mass" M of the system is

M = (14.0 + ½*10.0) kg = 19.0 kg

The motive force would be

F = ma

F = 14 * 9.8

F = 137.2N

so that the acceleration would be

a = F/m

a = 137.2/19

a = 7.22m/s²

Finally, using equation of motion.

V² = u² + 2as

14.3² = 0 + 2*7.22*s

204.49 = 14.44s

s = 204.49/14.44

s = 14.16m

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3 years ago
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3 years ago
An example of a Natural electric field is
liberstina [14]

Answer:

Lightning

Explanation

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4 years ago
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4 0
3 years ago
What is the symbol SI unit of time?
Vsevolod [243]

Answer:

second is the SI unit of time

7 0
3 years ago
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