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Luden [163]
4 years ago
15

How fast (in rpm) must a centrifuge rotate if a particle 7.50 cm from the axis of rotation is to experience an acceleration of 1

19000 g's? If the answer has 4 digits or more, enter it without commas, e.g. 13500.

Physics
1 answer:
Andreas93 [3]4 years ago
7 0

Explanation:

Below is an attachment containing the solution.

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A bullet moving at a speed of 152 m/s passes through a plank of wood at 128m/s. Another bullet moving at 97m/s passes through th
Ivahew [28]

Answer:

The speed of the plank is 81.68 m/s

Explanation:

Given that,

Speed of bullet = 152 m/s

Speed of wood = 128 m/s

Speed of another bullet = 97 m/s

We need to calculate the speed of plank

Using conservation of momentum

m_{1}u_{1}=(m_{1}+m_{2})v

Where,

u = initial velocity

v = final velocity

152m_{1}=(m_{1}+m_{2})128....(I)

m_{1}97=(m_{1}+m_{2})v....(II)

From equation(I) and equation(II)

\dfrac{152}{97}=\dfrac{128}{v}

= \dfrac{128\times97}{152}

v=81.68\ m/s

Hence, The speed of the plank is 81.68 m/s

4 0
4 years ago
Whar determines the direction of ocean currents​
Arturiano [62]

Answer:

The direction in which they rotate is determined by the hemisphere in which they are located. The main overall global wind patterns, the rotation of the Earth, and the shape of ocean basins are the three major factors that decide surface currents.

3 0
3 years ago
Read 2 more answers
show mathematically why an 80,000 pound ( 36,000 kg ) big rig taveling 2 mph (0.89 m/s) has the SAME MOMENTUM as a 4,000 pound (
bekas [8.4K]

The momentum value for both Big rig and sport utility vehicle are the same as 16000 pound mph

<u>Explanation:</u>

Given data are as follows  

For Big rig, Mass = 80,000 pound (36,000 kg)  

velocity = 2  mph (0.89 m/s)

where mph is meter per hour

For sport utility vehicle, Mass = 40,000 pound (1800 kg)

velocity = 40 mph (18 m/s)

The formula to find the Momentum of an object is

Momentum = Mass × Velocity (Kilogram meter per second)

Momentum for Big rig = 80,000 × 2 (pound mph)

 = 1,60,000 pound mph

Momentum for sport utility vehicle = 4000 × 40 (pound mph)

 = 1,60,000 pound mph  

Hence it is mathematically proved that  

The momentum of big rig = The momentum of sport utility vehicle

1,60,000 pound mph = 1,60,000 pound mph

3 0
4 years ago
WHICH ONE IS IT????<br><br> RINGS<br><br> POINT<br><br> GRAPH<br><br> READS<br><br> TALKS
krok68 [10]

Answer:  c or b

Explanation:

5 0
3 years ago
Read 2 more answers
What is the frequency of an electromagnetic wave that has a wavelength of 4,000m?
NeTakaya

Answer:

f=75000hz

Explanation:

fλ= c

f= c/λ

f = 3.0×10^8/4000

f=75000hz

7 0
4 years ago
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