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3 years ago

What is the relationship among

1 answer:

4 0

The bigger the object the greater the gravitational pull, so the farther away the big object is its gravitational force begins to decrease. Refer to the picture for more explanation.

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For fully developed laminar pipe flow in a circular pipe, the velocity profile is u(r) = 2(1-r2 /R2 ) in m/s, where R is the inn

sdas [7]

Answer:

a) $v_{max} = 2\ \textup{m/s}$

b) $v_{avg} = 1\ \textup{m/s}$

c) Q = 1.256 × 10⁻³ m³/s

Explanation:

Given:

The velocity profile as:

$u(r) = 2(1-\frac{r^2}{R^2} )$

Now, the maximum velocity of the flow is obtained at the center of the pipe

i.e r = 0

thus,

$v_{max}=u(0) = 2(1-\frac{0^2}{R^2} )$

$v_{max} = 2\ \textup{m/s}$

Now,

$v_{avg} = \frac{v_{max}}{2}\ \textup{m/s}$

$v_{avg} = \frac{2}}{2}\ \textup{m/s}$

$v_{avg} = 1\ \textup{m/s}$

Now, the flow rate is given as:

Q = Area of cross-section of pipe × $v_{avg}$

Q = $\frac{\pi D^2}{4}\times v_{avg}$

Q = $\frac{\pi 0.04^2}{4}\times 1$

Q = 1.256 × 10⁻³ m³/s

7 0

3 years ago

MacGyver is riding on a skateboard and moving west of the velocity of 7 m/s. Macgyver has a mass of 92 kg and the skateboard has

ivann1987 [24]

Answer:

64.5

Explanation:

(m1 + m2) v initial = (m1 * v1 final) + (m2 * v2 final)

(92 + 8)(-7) = (92 x 2) + (8 x v2 final)

(100)(-7) = (184) + (8 x v2 final)

-700 = (184) + (8 x v2 final)

-516 = (8 x v2 final)

-516/8 = v2 final

-64.5 = v2 final

8 0

3 years ago

Which of the following illustrates 2 resistors in a series circuit?

umka2103 [35]

Explanation :

An electrical circuit can be either connected in series or parallel.

Series combination: The current flowing in each resistor is the same and the equivalent resistance is given by :

$R{eq}=R_1+R_2+R_3+.................+R_n$

Parallel combination: The voltage for all components in the parallel combination is the same. The equivalent resistance is given by :

$\dfrac{1}{R_{eq}}=\dfrac{1}{R_{1}}+\dfrac{1}{R_{2}}+\dfrac{1}{R_{3}}......................+\dfrac{1}{R_{n}}$

So, our of given options the correct one is (b) because the current flowing in both the resistors is the same.

5 0

4 years ago

Read 2 more answers

You can make a solute dissolve more quickly in a solvent by

Gekata [30.6K]

Answer:Stirring.

Explanation:Stirring a solute into a solvent speeds up the rate of dissolving because it helps distribute the solute particles throughout the solvent. For example, when you add sugar to iced tea and then stir the tea, the sugar will dissolve faster.

3 0

3 years ago

A ball with a mass of 0.5 kg is hit with a force of 2.5 N what is its acceleration?

stealth61 [152]

Explanation:

50 m/s may squared siya sa dun sa may s

8 0

4 years ago

Read 2 more answers