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steposvetlana [31]
3 years ago
15

A horizontal pipe with water flowing through it has a circular cross section that varies in diameter. the diameter at the wide s

ection is 4 times the diameter at the narrow section. If the rate of flow of the water in the narrow section is 9.0 L/min, the rate of flow of the water in the wide section is:_________
Physics
1 answer:
Nitella [24]3 years ago
7 0

Answer:

9.0 L/min

Explanation:

From the given information, the flow rate in the wider section appears to four times that of the narrow section.

Since the flow rate for a pipe at any time (t) = Area (A) × speed (V)

we can say that:

A_wV_w = A_nV_n

Then, the flow rate in the wider section will also be 9.0 L/min. This is because the mass flow rate must be kept constant regardless of the changes in the size of the cross-sectional area.

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Monochromatic light with wavelength 588 nm is incident on a slit with width 0.0351 mm. The distance from the slit to a screen is
Norma-Jean [14]

Answer:

Explanation:

A. Using

Sinစ= y/ L = 0.013/2.7= 0.00481

စ=0.28°

B.here we use

Alpha= πsinစa/lambda

= π x (0.0351)sin(0.28)/588E-9m

= 9.1*10^-2rad

C.we use

I(စ)/Im= (sin alpha/alpha) ²

So

{= (sin0.091/0.091)²

= 3*10^-4

6 0
4 years ago
A uniform 1.4-kg rod that is 0.75 m long is suspended at rest from the ceiling by two springs, one at each end of the rod. Both
svetlana [45]

Answer:

7 deg

Explanation:

m = mass of the rod = 1.4 kg

W = weight of the rod = mg = (1.4) (9.8) = 13.72 N

k_{L} = spring constant for left spring = 59 Nm^{-1}

k_{R} = spring constant for right spring = 33 Nm^{-1}

x_{L} = stretch in the left spring

x_{R} = stretch in the right spring

L = length of the rod = 0.75 m

\theta = Angle the rod makes with the horizontal

Using equilibrium of force in vertical direction for left spring

k_{L} x_{L} = (0.5) W\\(59) x_{L} = (0.5) (13.72)\\x_{L} = 0.116 m

Using equilibrium of force in vertical direction for right spring

k_{R} x_{R} = (0.5) W\\(33) x_{R} = (0.5) (13.72)\\x_{R} = 0.208 m

Angle made with the horizontal is given as

\theta = tan^{-1}(\frac{(x_{R} - x_{L})}{L} )\\\theta = tan^{-1}(\frac{(0.208 - 0.116)}{0.75} )\\\theta = 7 deg

3 0
4 years ago
I NEED HELP PLEASE HELP ME
AnnZ [28]

Answer:

24000N

Explanation:

The mass of the object stays the same, regardless of its gravitational field strength. But, weight=mass*gravitational field strength.

So, the gravitational field strength on Earth is 10N. 2400*10=24000.

hope this helps

6 0
3 years ago
Speed training increases one's maximum velocity.<br> a. True<br> b. False
Harrizon [31]
That is absolutely true.
3 0
4 years ago
Read 2 more answers
We have two equal size boxes, A and B. Each box contains gas that behaves as an ideal gas. We insert a thermometer into each box
AlekseyPX

Answer:

d) The molecules in A have more average kinetic energy per molecule than those in B

e) The molecules in A are moving faster than those in B

Explanation:

Given that

Size of boxes are equal

So volume of boxes = V

Temperature in box A =50°C = 323 k

Temperature in box B = 10°C = 283 K

We know that for ideal gas

P V = m R T

The mass of gases is not given so we can not say that which have high temperature.Also be can not say that which box have more molecule.

We know that average kinetic energy is directly proportional to the absolute temperature of gas that is why we can say that box A will have more kinetic energy because it have high temperature.We know that is gas have high kinetic energy then we can say that it have high moving velocity.

So the option d and e is correct.

d) The molecules in A have more average kinetic energy per molecule than those in B

e) The molecules in A are moving faster than those in B

5 0
3 years ago
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