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Juli2301 [7.4K]
2 years ago
15

A centrifuge rotates so that 0. 25 m from the center is traveling at 343 m/s (the speed of sound). How many RPM is this? What is

its angular velocity?
Physics
1 answer:
andrew-mc [135]2 years ago
8 0

Answer:

[13,101 RPM]

[1372 rad/s]

Explanation:

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A 06-C charge and a .07-C charge are apart at 3 m apart. What force attracts them?
Burka [1]

Answer:

the force of attraction between the two charges is 4.2 x 10⁹ N.

Explanation:

Given;

the magnitude of first charge, q₁ = 0.06 C

the magnitude of the second charge, q₂ = 0.07 C

distance between the two charges, r = 3 m

The force of attraction between the two charges is calculated as ;

F = \frac{Kq_1q_2}{r^2}

where;

k is Coulomb's constant = 9 x 10⁹ Nm²/C²

F = \frac{Kq_1q_2}{r^2} \\\\F = \frac{(9\times 10^9)(0.06)(0.07)}{3^2} \\\\F = 4.2 \times 10^{6} \ N

Therefore, the force of attraction between the two charges is 4.2 x 10⁹ N.

5 0
3 years ago
1. In a certain semiconducting material the charge carriers each have a charge of 1.6 x 10-19 C. How many are entering the semic
Gennadij [26K]

Answer:

The number of charges is 1.25 × 10¹⁰

Explanation:

Current is the amount of charge flowing through a conductor per second. The formula for current (I) is given as:

I = Q/t

Where Q is the charge flowing in coulombs and t is the time taken in seconds.

Given that I = 2.0 nA = 2 × 10⁻⁹ A and t = 1 sec

I = Q / t

Q = It =  2 × 10⁻⁹ × 1 =  2 × 10⁻⁹ C

Since each charge = 1.6 x 10⁻¹⁹ C, therefore:

The number of charges = 2 × 10⁻⁹ C / 1.6 x 10⁻¹⁹ C = 1.25 × 10¹⁰

5 0
3 years ago
How much did the pressure drop in the storm's center from November 9, 1200z, until November 11, 0000z
o-na [289]

The pressure dropped by 24 MB in the storm's center from November 9, 1200z, until November 11, 0000z.

Using the attached map below, in the morning of November 9, the pressure situated at the storm's center = 1000 MB isobar located at the center.

Meanwhile, on November 11, 0000z the pressure situated at the storm's center = 976 MB isobar  

The difference in this pressure is regarded as the pressure drop in the storm's center and it is determined as follows;

= 1000 MB - 976 MB

= 24 MB

Therefore, we can conclude that the pressure drop by 24 MB in the storm's center from November 9, 1200z, until November 11, 0000z.

Learn more about pressure drop in an isobaric process here:

brainly.com/question/13089696?referrer=searchResults

3 0
3 years ago
Which pair of objects will have the least gravitational attraction to each other
polet [3.4K]

Hey i am here to help you.

A: 2 concrete blocks 6cm apart will have the least gravitational attraction to each other.

I believe that this answer was helpful.

5 0
3 years ago
What is centripetal force<br>hello​
Gwar [14]

Answer:

A centripetal force is a net force that acts on an object to keep it moving along a circular path

8 0
3 years ago
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