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hichkok12 [17]
3 years ago
13

When a fluid is heated, what changes occur?

Physics
1 answer:
lisov135 [29]3 years ago
8 0
The answer to this question is A. It becomes less dense and begins to rise.
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In a horizontal pipe with a gradually decreasing cross-section (in the direction of flow) there is a clear fluid of unknown dens
qwelly [4]

Answer:

the density of this clear fluid is 1140.35 kg/m^3

Explanation:

Given that :

P_p = P__{Q}} + 260 \ Pa \\ \\ v_p =0.37 \ m/s \\ \\ v_Q = 0.77 \ m/s

According to Bernoulli's Equation.

P_p + \frac{1}{2} pv^2_p+pgh_p= P_Q+ \frac{1}{2} pv^2_Q + pgh_Q

∴ 260 = \frac{1}{2}p (v^2_Q-v^2_p)      since ( h_p = h_Q)

\rho = \frac{2(260)}{v^2_Q-v^2_p}

\rho = \frac{2(260)}{0.77^2-0.37^2}

\rho = \frac{520}{0.5929-0.1369}

\rho = 1140.35 \  kg/m^3

5 0
4 years ago
A charge Q is transferred from an initially uncharged plastic ball to an identical ball 17 cm away. The force of attraction is t
Alecsey [184]

Answer:

2.92 x 10¹² electrons

Explanation:

given,

distance between two plastic ball, r = 17 cm

                                      r = 0.17 m

Force of attraction = F = 68 mN

                F = 0.068 N

number of electron transferred from one ball to another.

using Coulomb Force equation

F = \dfrac{kq^2}{r^2}

0.068 = \dfrac{9\times 10^9\times q^2}{0.17^2}

q² = 2.1835 x 10⁻¹³

q = 4.67 x 10⁻⁷ C

now, number of electron

 N = \dfrac{q}{e}

e is the charge of electron which is equal to 1.6 x 10⁻¹⁹ C

  N = \dfrac{4.67\times 10^{-7}}{1.6\times 10^{-19}}

       N = 2.92 x 10¹² electrons

electrons were transferred from one ball to the other is 2.92 x 10¹²

5 0
4 years ago
What pattern is seen on the moon from earth?
igomit [66]

If you mean pattern designs it’s rocky bumpy and you can see the circle patterns

If you mean phases the here’s a picture

7 0
3 years ago
Distance is a vector quantity ... true or false
Elena-2011 [213]
Answer:False
Reason:
7 0
3 years ago
Read 2 more answers
Imagine a car moving down a street. From which reference point would the
antiseptic1488 [7]

Answer:

From the car

Explanation:

You are in motion

Hope this helps

5 0
3 years ago
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