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Ghella [55]
3 years ago
8

Question 5 of 10

Physics
1 answer:
muminat3 years ago
5 0
The correct answer to this question is D
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What will terminal velocity look like on a velocity v. time graph?
mrs_skeptik [129]
The horizontal is s or displacement
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3 0
2 years ago
shows a conical pendulum, in which the bob (the small object at the lower end of the cord) moves in a horizontal circle at const
Contact [7]

Answer:

a) T=0.40 N

b) T=1.9 s

Explanation:

Let's find the radius of the circumference first. We know that bob follows a circular path of circumference 0.94 m, it means that the perimeter is 0.94 m.

The perimeter of a circunference is:

P=2\pi r=0.94

r=\frac{0.94}{2\pi}=0.15 m

Now, we need to find the angle of the pendulum from vertical.

tan(\alpha)=\frac{r}{L}=\frac{0.15}{0.90}=0.17

\alpha=9.44 ^{\circ}

Let's apply Newton's second law to find the tension.

\sum F=ma_{c}=m\omega^{2}r

We use centripetal acceleration here, because we have a circular motion.

The vertical equation of motion will be:

Tcos(\alpha)=mg (1)

The horizontal equation of motion will be:

Tsin(\alpha)=m\omega^{2}r (2)

a) We can find T usinf the equation (1):

T=\frac {mg}{cos(\alpha)}=\frac{0.04*9.81}{cos(9.44)}=0.40 N

We can find the angular velocity (ω) from the equation (2):

\omega=\sqrt{\frac{Tsin(\alpha)}{mr}}=3.31 rad/s

b) We know that the period is T=2π/ω, therefore:

T=\frac{2\pi}{\omega}=\frac{2\pi}{3.31}=1.9 s

I hope it helps you!

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3 years ago
Which chemical equation represents a decomposition reaction? HELP ASAP!!!!
Vanyuwa [196]

Answer:

2H20 --> 2H2 + 02

Explanation:

ape x

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Carole is surprised when she makes an emergency stop and the tissue box that had been in the back window of her car hits the bac
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B An object in motion tends to stay in motion .
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Read 2 more answers
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