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Tanya [424]
2 years ago
9

A 5 kg ball is suspended on one cable. Calculate the tension in the cable.

Physics
1 answer:
aleksandr82 [10.1K]2 years ago
3 0

Answer:

I'm 3 percent it is b soooooo

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A lead bar 12 cm long, 2 cm wide, and 2 cm talk has a density of 11.3g/cm3. If you cut the bar in half, what is the density of o
VMariaS [17]

Answer:

The density of one halves  11.3 g / cm cube

Explanation:

Density remain same because cutting the bar in half , mass and volume will decrease to half so density will not change .

density = \frac{mass}{volume}

5 0
3 years ago
"Calculate the speed of this sound wave by recording how much time it takes to travel 5 meters. Use the (old school) velocity eq
lianna [129]
1) sound velocity reported by you : 292.39 m /s

2) time to travel 1620m at that velocity: t = d / v = 1620 m / 292.39 m/s = 5.54 s, since the moment the sound wave started.

3) You might wanted to tell the time since you watched the lightning.

Then you can calculate the time since the lighting was generated,1620 m away from you, until you saw it, using the speed of light:

 speed of light = 3*10^8 m/s => t = 1620 m / (3*10^8m/s) =0.0000054 s

Then, this time is completely neglectible, and yet the answer is 5.54 s, as calculated in the step 2.
7 0
3 years ago
Please help ASAP A uniform disk of mass M and radius R is pivoted such that it can rotate freely about a horizontal axis through
kompoz [17]

Answer: F = mg(1 + 4m / (½M + m))

Explanation:

"At this point seems" unclear. If the particle is at the top of the disc and angular velocity is negligible, then the force would equal the weight of the particle. F = mg

The more interesting question would be what force is needed to keep the particle attached when significant angular rotation has been achieved. The maximum point would be diametrically opposed to the starting point.

I will analyze it there

The potential energy will convert to kinetic energy

   mgh = ½Iω²

mg(2R) = ½(½MR² + mR²)ω²

 4mgR = R²(½M + m)ω²

       ω² = 4mg / (R(½M + m))

With m at the lowest position, the force of attachment must support the weight of m and provide for the needed centripetal acceleration

F = m(g + ω²R)

F = m(g + 4mg / (R(½M + m))R)

F = mg(1 + 4m / (½M + m))

7 0
2 years ago
A wire that is 0.36 meters long moves perpendicularly through a magnetic field at a speed of 0.21 meters/second. The induced emf
dmitriy555 [2]
0.034 newtons/amp·meter

8 0
3 years ago
Read 2 more answers
Which side of the electromagnetic spectrum has shorter wavelengths?
gtnhenbr [62]

Answer:

Blue, Blue, Blue

Explanation:

I am doing edjunuety right now

Hope this helps

:)

8 0
3 years ago
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